ovotestis vs gonad

ovotestis and gonad both are nouns.

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

As nouns, gonad is a hypernym of ovotestis; that is, gonad is a word with a broader meaning than ovotestis:

ovotestis: hermaphroditic gonad that contains both testicular and ovarian tissue
gonad: a gland in which gametes (sex cells) are produced

Other hypernyms of ovotestis include sex gland.

ovotestis (noun)	gonad (noun)
hermaphroditic gonad that contains both testicular and ovarian tissue	a gland in which gametes (sex cells) are produced