order Parietales vs plant order

order Parietales and plant order both are nouns.

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

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

order Parietales: a large order of dicotyledonous plants of subclass Dilleniidae
plant order: the order of plants

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