suborder Passeres vs order Passeriformes

suborder Passeres and order Passeriformes both are nouns.

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

suborder Passeres (noun)	order Passeriformes (noun)
two names for the suborder of typical songbirds	largest order of birds comprising about half the known species: rooks, finches, sparrows, tits, warblers, robins, wrens, swallows, etc.; the four suborders are Eurylaimi, Tyranni, Menurae and Oscines or Passeres