testicle vs ballock

testicle and ballock both are nouns.

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

As nouns, testicle and ballock are synonyms defined as:

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

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

testicle (noun)	ballock (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