suborder Passeres vs Passeres

suborder Passeres and Passeres both are nouns.

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

As nouns, suborder Passeres and Passeres are synonyms defined as:

suborder Passeres and Passeres: two names for the suborder of typical songbirds

Other synonyms of suborder Passeres include Oscines, suborder Oscines.

suborder Passeres (noun)	Passeres (noun)
two names for the suborder of typical songbirds	two names for the suborder of typical songbirds