bird genus vs subphylum Vertebrata

bird genus and subphylum Vertebrata both are nouns.

Word	Noun	Adjective	Verb	Adverb
bird genus	Yes	No	No	No
subphylum Vertebrata	Yes	No	No	No

bird genus (noun)	subphylum Vertebrata (noun)
a genus of birds	fishes, amphibians, reptiles, birds, mammals