order Hypericales vs subclass Dilleniidae

order Hypericales and subclass Dilleniidae both are nouns.

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

order Hypericales (noun)	subclass Dilleniidae (noun)
a large order of dicotyledonous plants of subclass Dilleniidae	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