bollock vs gonad

bollock and gonad both are nouns.

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

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

bollock: one of the two male reproductive glands that produce spermatozoa and secrete androgens
gonad: a gland in which gametes (sex cells) are produced

Other hypernyms of bollock include sex gland, male reproductive gland.

bollock (noun)	gonad (noun)
a pulley-block at the head of a topmast	a gland in which gametes (sex cells) are produced
one of the two male reproductive glands that produce spermatozoa and secrete androgens