monorchism vs cryptorchidy

monorchism and cryptorchidy both are nouns.

Word	Noun	Adjective	Verb	Adverb
monorchism	Yes	No	No	No
cryptorchidy	Yes	No	No	No

As nouns, cryptorchidy is a hypernym of monorchism; that is, cryptorchidy is a word with a broader meaning than monorchism:

monorchism: failure of one testes to descend into the scrotum
cryptorchidy: failure of one or both testes to move into the scrotum as the male fetus develops

Other hypernyms of monorchism include cryptorchidism, cryptorchism.

monorchism (noun)	cryptorchidy (noun)
failure of one testes to descend into the scrotum	failure of one or both testes to move into the scrotum as the male fetus develops