Parietales vs plant order

Parietales and plant order both are nouns.

Word	Noun	Adjective	Verb	Adverb
Parietales	Yes	No	No	No
plant order	Yes	No	No	No

As nouns, plant order is a hypernym of Parietales; that is, plant order is a word with a broader meaning than Parietales:

Parietales (noun)	plant order (noun)
a large order of dicotyledonous plants of subclass Dilleniidae	the order of plants