#### Answer

A prime number is a number whose only factors are $1$ and itself. On the other hand, a composite number is a number that has factors other than $1$ and itself.

#### Work Step by Step

A prime number is a number whose only factors are $1$ and itself.
Example:
$5$ is a prime number since the only factors of $5$ are $5$ and $1$.
A composite number is a number that has factors other than $1$ and itself.
Example:
$10$ is a composite number since it can be factored as:
$10=5(2)$