order Commelinales vs yellow-eyed grass family

order Commelinales and yellow-eyed grass family both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Commelinales	Yes	No	No	No
yellow-eyed grass family	Yes	No	No	No

order Commelinales (noun)	yellow-eyed grass family (noun)
an order of monocotyledonous herbs	plants of tropical to temperate regions; usually in wet places