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A hierarchical data structure consisting of nodes connected by edges, where each node has a parent node and zero or more child nodes, often used to represent hierarchical relationships or nested data.

"The file system can be represented as a tree structure, with directories as nodes and files as leaves."


A data structure that simulates a hierarchical tree structure, with a root value and subtrees of children with a parent node.

"Binary trees are used in computer science for searching and sorting data efficiently."