gonad vs ovary

gonad and ovary both are nouns.

Word	Noun	Adjective	Verb	Adverb
gonad	Yes	No	No	No
ovary	Yes	No	No	No

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

gonad: a gland in which gametes (sex cells) are produced
ovary: (vertebrates) one of usually two organs that produce ova and secrete estrogen and progesterone

Other hyponyms of gonad include ovotestis, ball, ballock, bollock, egg, nut, orchis, testicle, testis.

gonad (noun)	ovary (noun)
a gland in which gametes (sex cells) are produced	(vertebrates) one of usually two organs that produce ova and secrete estrogen and progesterone
	the organ that bears the ovules of a flower