asterid dicot genus vs subclass Asteridae

asterid dicot genus and subclass Asteridae both are nouns.

Word	Noun	Adjective	Verb	Adverb
asterid dicot genus	Yes	No	No	No
subclass Asteridae	Yes	No	No	No

asterid dicot genus (noun)	subclass Asteridae (noun)
genus of more or less advanced dicotyledonous herbs and some trees and shrubs	a group of mostly sympetalous herbs and some trees and shrubs mostly with 2 fused carpels; contains 43 families including Campanulales, Solanaceae, Scrophulariaceae, Labiatae, Verbenaceae, Rubiaceae, Compositae; sometimes classified as a superorder