dilleniid dicot genus vs subclass Dilleniidae

dilleniid dicot genus and subclass Dilleniidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
dilleniid dicot genus	Yes	No	No	No
subclass Dilleniidae	Yes	No	No	No

dilleniid dicot genus (noun)	subclass Dilleniidae (noun)
genus of more or less advanced dicotyledonous trees and shrubs and herbs	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