# Why are numerator and denominator called so?

There are terminologies for natural numbers, whole numbers and so on. (If the meaning of the terms can be found, it becomes easier to understand. For natural numbers, the term "natural" refers to the naturally occurring set of numbers in nature like $2,3,4$ and not $-2$, $-3$, and $-4$).

But I didn't find any information about why the numerator is called "numerator" and denominator is called "denominator".

Is it just a simple terminology given by mathematicians (like "addition" in addition) or is there any special "meaning" behind these terms (like "natural" in natural numbers)?