order Charadriiformes vs Aves

order Charadriiformes and Aves both are nouns.

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

order Charadriiformes (noun)	Aves (noun)
large diverse order of aquatic birds found along seacoasts and inland waters: shorebirds and coastal diving birds; most feed on animal life	(ornithology) the class of birds