The numbers 1, 2, 3, 4, 5,.... and so on..... all are called Natural Numbers.
And the collection of Whole Numbers and Negative Numbers are known as Integers.
So, the numbers 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5,.... and so on.....all are known as integers.
All Natural Numbers are a part of integers, but all integers cannot be a part of Natural numbers
Any Natural number can be referred to as Integers also, but all integers cannot be referred to Natural Numbers. Only positive integers can be referred as Natural numbers.
Let's understand this with the help of following Number Line:
