19.
Explanation
Binary Tree:
• A binary tree is a hierarchical data structure where each node can have at most two child nodes, known as the left child and the right child.
• Binary trees do not impose any specific order or constraints on the values of nodes.
Binary Search Tree (BST):
• A binary search tree is a specific type of binary tree where the nodes are organized in a way that for each node, all values in its left subtree are less than the node's value, and all values in its right subtree are greater than the node's value.
• BSTs are used for efficient searching, insertion, and deletion operations and maintain order among the elements.
In summary, while a binary tree is a general data structure with no ordering constraints, a binary search tree is a specialized binary tree that enforces a specific order of values, making it useful for efficient searching and retrieval of data.