bird genus vs subphylum Craniata

bird genus and subphylum Craniata both are nouns.

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

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