dividend vs numerator

dividend and numerator both are nouns.

Word	Noun	Adjective	Verb	Adverb
dividend	Yes	No	No	No
numerator	Yes	No	No	No

As nouns, numerator is a hyponym of dividend; that is, numerator is a word with a more specific, narrower meaning than dividend:

dividend (noun)	numerator (noun)
that part of the earnings of a corporation that is distributed to its shareholders; usually paid quarterly	the dividend of a fraction
a bonus; something extra (especially a share of a surplus)
a number to be divided by another number