suborder Oscines vs oscine bird

suborder Oscines and oscine bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
suborder Oscines	Yes	No	No	No
oscine bird	Yes	No	No	No

suborder Oscines (noun)	oscine bird (noun)
two names for the suborder of typical songbirds	passerine bird having specialized vocal apparatus