Graph vs. Tree: Know the Difference

By Shumaila Saeed || Updated on December 26, 2023

A graph is a collection of nodes connected by edges with no specific structure, while a tree is a hierarchical structure of nodes, where each node has only one parent except the root node.

Graph vs. Tree

Key Differences

A graph is a set of nodes connected by edges, not necessarily following a hierarchical structure. A tree is a special form of a graph where nodes are arranged hierarchically, with a single root node and sub-nodes.

Dec 26, 2023

In a graph, edges can connect any two nodes, and cycles are possible. In a tree, each node (except the root) is connected to exactly one parent node, and cycles are not allowed.

Dec 26, 2023

Graphs can be more complex and flexible in structure, allowing for various types of connections. Trees have a more rigid structure, with a clear parent-child relationship among nodes.

Dec 26, 2023

Graphs are used in scenarios like social networks, where connections are diverse. Trees are used in scenarios like file systems, where a hierarchical organization is needed.

Dec 26, 2023

Graphs come in various types, such as directed, undirected, weighted, and unweighted. Trees also have types like binary trees, AVL trees, and B-trees, each with specific properties.

Dec 26, 2023

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Comparison Chart

XStructure

Can have any arrangement of nodes and edges

Hierarchical structure with a single root

Dec 26, 2023

Edge Connections

Edges can connect any nodes, allowing cycles

Edges connect nodes in a parent-child relationship, no cycles

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Hierarchy

No inherent hierarchy

Inherent hierarchical structure

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Node Relationship

Nodes have no defined parent-child relationship

Every node (except root) has exactly one parent

Dec 26, 2023

Common Uses

Network modeling, path finding

Organizational charts, data storage

Dec 26, 2023

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Graph and Tree Definitions

Graph

A diagram showing the relation between variable quantities.

The graph plotted temperature against time.

Dec 26, 2023

Tree

A hierarchical model with a single root and branches.

The tree structure was used to organize the database.

Dec 26, 2023

Graph

A mathematical structure used to model pairwise relations.

The graph illustrated the social network connections.

Dec 26, 2023

Tree

A connected graph with no cycles.

The tree showed a clear lineage of the royal family.

Dec 26, 2023

Graph

A network of nodes that may or may not form a cycle.

The graph depicted various routes between airports.

Dec 26, 2023

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Tree

A structure with nodes representing parent-child relationships.

The organizational chart was designed as a tree.

Dec 26, 2023

Graph

A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship. Also called plot.

Oct 19, 2023

Tree

A perennial woody plant having a main trunk and usually a distinct crown.

Oct 19, 2023

Graph

A pictorial device, such as a pie chart or bar graph, used to illustrate quantitative relationships. Also called chart.

Oct 19, 2023

Tree

An herbaceous plant or shrub resembling a tree in form or size.

Oct 19, 2023

Graph

The spelling of a word.

Oct 19, 2023

Tree

Something that resembles a tree in form, especially a diagram or arrangement that has branches showing relationships of hierarchy or lineage.

Oct 19, 2023

Graph

Any of the possible forms of a grapheme.

Oct 19, 2023

Tree

(Computers) A structure for organizing or classifying data in which every item can be traced to a single origin through a unique path.

Oct 19, 2023

Graph

A written character that represents a vowel, consonant, syllable, word, or other expression and that cannot be further analyzed.

Oct 19, 2023

Tree

A wooden beam, post, stake, or bar used as part of a framework or structure.

Oct 19, 2023

Graph

To represent by a graph.

Oct 19, 2023

Tree

A saddletree.

Oct 19, 2023

Graph

To plot (a function) on a graph.

Oct 19, 2023

Tree

A gallows.

Oct 19, 2023

Graph

A data chart (graphical representation of data) intended to illustrate the relationship between a set (or sets) of numbers (quantities, measurements or indicative numbers) and a reference set, whose elements are indexed to those of the former set(s) and may or may not be numbers.

Oct 19, 2023

Tree

The cross on which Jesus was crucified.

Oct 19, 2023

Graph

(mathematics) A set of points constituting a graphical representation of a real function; (formally) a set of tuples

(x_1, x_2, \ldots, x_m, y)\in\R^{m+1}

, where

y=f(x_1, x_2, \ldots, x_m)

for a given function

f: \R^m\rightarrow\R

. See also Graph of a function Category:en:Curves Category:en:Functions

Oct 19, 2023

Tree

To force up a tree

Dogs treed the raccoon.

Oct 19, 2023

Graph

(graph theory) A set of vertices (or nodes) connected together by edges; (formally) an ordered pair of sets

(V,E)

, where the elements of

V

are called vertices or nodes and

E

is a set of pairs (called edges) of elements of

V

. See also Graph (discrete mathematics)

Oct 19, 2023

Tree

(Informal) To force into a difficult position; corner

The reporters finally treed the mayor.

Oct 19, 2023

Graph

(topology) A topological space which represents some graph (ordered pair of sets) and which is constructed by representing the vertices as points and the edges as copies of the real interval [0,1] (where, for any given edge, 0 and 1 are identified with the points representing the two vertices) and equipping the result with a particular topology called the graph topology.

Oct 19, 2023

Tree

To supply or cover with trees

A hillside that is treed with oaks.

Oct 19, 2023

Graph

A morphism

\Gamma_f

from the domain of

f

to the product of the domain and codomain of

f

, such that the first projection applied to

\Gamma_f

equals the identity of the domain, and the second projection applied to

\Gamma_f

is equal to

f

.

Oct 19, 2023

Tree

A perennial woody plant, not exactly defined, but differentiated from a shrub by its larger size (typically over a few meters in height) or growth habit, usually having a single (or few) main axis or trunk unbranched for some distance above the ground and a head of branches and foliage.

Hyperion is the tallest living tree in the world.

Birds have a nest in a tree in the garden.

Oct 19, 2023

Graph

A graphical unit on the token-level, the abstracted fundamental shape of a character or letter as distinct from its ductus (realization in a particular typeface or handwriting on the instance-level) and as distinct by a grapheme on the type-level by not fundamentally distinguishing meaning.

Oct 19, 2023

Tree

Any plant that is reminiscent of the above but not classified as a tree (in any botanical sense).

The banana tree

Oct 19, 2023

Graph

(transitive) To draw a graph.

Oct 19, 2023

Tree

An object made from a tree trunk and having multiple hooks or storage platforms.

He had the choice of buying a scratching post or a cat tree.

Oct 19, 2023

Graph

To draw a graph of a function.

Oct 19, 2023

Tree

A device used to hold or stretch a shoe open.

Oct 19, 2023

Graph

A curve or surface, the locus of a point whose coördinates are the variables in the equation of the locus; as, a graph of the exponential function.

Oct 19, 2023

Tree

The structural frame of a saddle.

Oct 19, 2023

Graph

A diagram symbolizing a system of interrelations of variable quantities using points represented by spots, or by lines to represent the relations of continuous variables. More than one set of interrelations may be presented on one graph, in which case the spots or lines are typically distinguishable from each other, as by color, shape, thickness, continuity, etc. A diagram in which relationships between variables are represented by other visual means is sometimes called a graph, as in a bar graph, but may also be called a chart.

Oct 19, 2023

Tree

(graph theory) A connected graph with no cycles or, if the graph is finite, equivalently a connected graph with n vertices and n−1 edges.

Oct 19, 2023

Graph

A drawing illustrating the relations between certain quantities plotted with reference to a set of axes

Oct 19, 2023

Tree

(computing theory) A recursive data structure in which each node has zero or more nodes as children.

Oct 19, 2023

Graph

Represent by means of a graph;

Chart the data

Oct 19, 2023

Tree

(graphical user interface) A display or listing of entries or elements such that there are primary and secondary entries shown, usually linked by drawn lines or by indenting to the right.

We’ll show it as a tree list.

Oct 19, 2023

Graph

Plot upon a graph

Oct 19, 2023

Tree

Any structure or construct having branches representing divergence or possible choices.

Family tree; skill tree

Oct 19, 2023

Graph

A collection of points (vertices) connected by lines (edges).

In this graph, each vertex represents a city.

Dec 26, 2023

Tree

The structure or wooden frame used in the construction of a saddle used in horse riding.

Oct 19, 2023

Graph

A visual representation of data to show trends.

The bar graph displayed the company's sales data.

Dec 26, 2023

Tree

Marijuana.

Oct 19, 2023

Tree

(obsolete) A cross or gallows.

Tyburn tree

Oct 19, 2023

Tree

(chemistry) A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution.

Oct 19, 2023

Tree

(cartomancy) The fifth Lenormand card.

Oct 19, 2023

Tree

.

Oct 19, 2023

Tree

(transitive) To chase (an animal or person) up a tree.

The dog treed the cat.

Oct 19, 2023

Tree

(transitive) To place in a tree.

Black bears can tree their cubs for protection, but grizzly bears cannot.

Oct 19, 2023

Tree

(transitive) To place upon a tree; to fit with a tree; to stretch upon a tree.

To tree a boot

Oct 19, 2023

Tree

(intransitive) To take refuge in a tree.

Oct 19, 2023

Tree

Any perennial woody plant of considerable size (usually over twenty feet high) and growing with a single trunk.

Oct 19, 2023

Tree

Something constructed in the form of, or considered as resembling, a tree, consisting of a stem, or stock, and branches; as, a genealogical tree.

Oct 19, 2023

Tree

A piece of timber, or something commonly made of timber; - used in composition, as in axletree, boottree, chesstree, crosstree, whiffletree, and the like.

Oct 19, 2023

Tree

A cross or gallows; as Tyburn tree.

[Jesus] whom they slew and hanged on a tree.

Oct 19, 2023

Tree

Wood; timber.

In a great house ben not only vessels of gold and of silver but also of tree and of earth.

Oct 19, 2023

Tree

A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution. See Lead tree, under Lead.

Oct 19, 2023

Tree

To drive to a tree; to cause to ascend a tree; as, a dog trees a squirrel.

Oct 19, 2023

Tree

A tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms

Oct 19, 2023

Tree

A figure that branches from a single root;

Genealogical tree

Oct 19, 2023

Tree

English actor and theatrical producer noted for his lavish productions of Shakespeare (1853-1917)

Oct 19, 2023

Tree

Chase a bear up a tree with dogs and kill it

Oct 19, 2023

Tree

A data structure used in computer science.

Binary trees are commonly used in search algorithms.

Dec 26, 2023

Tree

A model used to depict hierarchical information.

The tree diagram helped in decision-making processes.

Dec 26, 2023

Repeatedly Asked Queries

What defines a tree?

A tree is a hierarchical structure of nodes with one parent per node.

Dec 26, 2023

What are some types of graphs?

Types include directed, undirected, weighted, and unweighted graphs.

Dec 26, 2023

What is a graph?

A graph is a collection of nodes connected by edges.

Dec 26, 2023

Are trees cyclic or acyclic?

Trees are acyclic; they do not have cycles.

Dec 26, 2023

Can a graph have cycles?

Yes, a graph can have cycles.

Dec 26, 2023

Can a tree be a graph?

Yes, a tree is a special type of graph.

Dec 26, 2023

How are graphs used in computer science?

Graphs model networks, relationships, and pathfinding problems.

Dec 26, 2023

What is a binary tree?

A binary tree is a tree where each node has up to two children.

Dec 26, 2023

How is a directed graph different?

In a directed graph, edges have a direction, indicating a one-way relationship.

Dec 26, 2023

What are examples of tree structures?

Examples include binary trees, AVL trees, and B-trees.

Dec 26, 2023

Can graphs represent real-world networks?

Yes, graphs are ideal for modeling real-world networks.

Dec 26, 2023

Is a tree always binary?

No, trees can have various numbers of children per node.

Dec 26, 2023

What is the root of a tree?

The root is the topmost node in a tree, without a parent.

Dec 26, 2023

Are all graphs trees?

No, not all graphs are trees.

Dec 26, 2023

What is a leaf in a tree?

A leaf is a node with no children.

Dec 26, 2023

What is the significance of edges in a graph?

Edges represent connections between nodes in a graph.

Dec 26, 2023

What makes a tree hierarchical?

Its structure of one parent per node, except for the root.

Dec 26, 2023

Can a tree have disconnected branches?

No, all nodes in a tree are connected by a path to the root.

Dec 26, 2023

Do graphs need to have connected components?

No, graphs can have disconnected components.

Dec 26, 2023

Are graph algorithms applicable to trees?

Yes, many graph algorithms can be applied to trees as well.

Dec 26, 2023

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About Author

Written by

Shumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.

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