The difference between Composite number and Integer
When used as nouns, composite number means a (nonzero) natural number that is expressible as the product of two (or more) natural numbers other than itself and 1, whereas integer means a number that is not a fraction.
check bellow for the other definitions of Composite number and Integer
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Composite number as a noun (number theory):
A (nonzero) natural number that is expressible as the product of two (or more) natural numbers other than itself and 1.
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Integer as a noun (arithmetic):
A number that is not a fraction; an element of the infinite and numerable set {..., -3, -2, -1, 0, 1, 2, 3, ...}.