order Ciconiiformes vs Aves

order Ciconiiformes and Aves both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Ciconiiformes	Yes	No	No	No
Aves	Yes	No	No	No

order Ciconiiformes (noun)	Aves (noun)
order of chiefly tropical marsh-dwelling fish-eating wading birds with long legs and bills and (except for flamingos) unwebbed feet: herons, storks, spoonbills, flamingos, ibises	(ornithology) the class of birds