Tree Terminologies

Nodes in 'Trees' data-structure - Kamalov Otash - Medium

Root: Node with no parent / topmost node

Edge: Link from parent to the child node

Leaf: Node with no children

Sibling: Children of the same parent

Ancestor: Parent, grandparents, great grandparents and so on of a node

Depth of node: Length of the path from the root to the node.

Height of node: Length of the path from the node to the deepest node

Height of tree: Same as the height of the root node

Depth of tree: Same as the depth of the root node, which is always 0 

 Predecessor: Immediate previous node in Inorder traversal of the tree

Successor: Immediate next node in Inorder traversal of the tree

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