order Rhoeadales vs subclass Dilleniidae

order Rhoeadales and subclass Dilleniidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Rhoeadales	Yes	No	No	No
subclass Dilleniidae	Yes	No	No	No

order Rhoeadales (noun)	subclass Dilleniidae (noun)
an order of dicotyledonous plants, containing the families Capparidaceae, Cruciferae, Moringaceae, Papaveraceae, Resedaceae, and Tovariaceae (Rhoeadales, Papaverales)	a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; contains 69 families including Ericaceae and Cruciferae and Malvaceae; sometimes classified as a superorder