ballock vs testis

ballock and testis both are nouns.

Word	Noun	Adjective	Verb	Adverb
ballock	Yes	No	No	No
testis	Yes	No	No	No

As nouns, ballock and testis are synonyms defined as:

ballock and testis: one of the two male reproductive glands that produce spermatozoa and secrete androgens

Other synonyms of ballock include ball, bollock, egg, nut, orchis, testicle.

ballock (noun)	testis (noun)
one of the two male reproductive glands that produce spermatozoa and secrete androgens	one of the two male reproductive glands that produce spermatozoa and secrete androgens