Prime Numbers - These numbers are numbers that only comes in the table of 1 and in their own table. They are not completely divisible by any other number then the table that comes in there own table or the number itself.
Example - 2, 3, 5, 7 , 11, 13, 17, 19...so on.
Composit numbers - These numbers are numbers that can come in any certain table as well as in their own table and in the table of 1. These number can be divisible by any number, sometimes completely divisible and sometimes not.
Example - 4, 6, 8, 9, 10, 12, 14, 16 , 18, 20....so on.