testis vs orchis

testis and orchis both are nouns.

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

As nouns, testis and orchis are synonyms defined as:

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

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

testis (noun)	orchis (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
	any of various deciduous terrestrial orchids having fleshy tubers and flowers in erect terminal racemes