The set of positive intergers are called natural numbers. For example: 1, 2, 3, 4.....
Whole numbers are the real numbers which include zero and all the positive integers.
For example: 0, 1, 2, 3....
The family of integers includes whole numbers and negative whole numbers. Integers can be positive, negative, or zero. For example: 1, -1, 0, 101 and -101.