scrotum vs pouch

scrotum and pouch both are nouns.

Word	Noun	Adjective	Verb	Adverb
scrotum	Yes	No	No	No
pouch	Yes	No	Yes	No

As nouns, pouch is a hypernym of scrotum; that is, pouch is a word with a broader meaning than scrotum:

scrotum: the external pouch that contains the testes
pouch: (anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)

Other hypernyms of scrotum include pocket.

scrotum (noun)	pouch (noun)
the external pouch that contains the testes	a small or medium size container for holding or carrying things
	(anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)
	an enclosed space

scrotum (verb)	pouch (verb)
	swell or protrude outwards
	put into a small bag
	send by special mail that goes through diplomatic channels