What do you mean by Tree?

Problem statement: what do you mean by Tree?

1. Tree is non-linear data structures where each node point to a number of nodes unlike linked list data structure each node points to the next node in a linear fashion.
2. In tree ADT(Abstract Data Type), order of the element is not important.
3. If we need ordering information, then linear data structure like linked list, stack, queue, etc can be used.