suborder Passeres vs oscine bird

suborder Passeres and oscine bird both are nouns.

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

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