pouched mammal vs marsupial

pouched mammal and marsupial both are nouns.

Word	Noun	Adjective	Verb	Adverb
pouched mammal	Yes	No	No	No
marsupial	Yes	Yes	No	No

As nouns, pouched mammal and marsupial are synonyms defined as:

pouched mammal and marsupial: mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried

pouched mammal (noun)	marsupial (noun)
mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried	mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried

pouched mammal (adjective)	marsupial (adjective)
	of or relating to the marsupials