Layia vs asterid dicot genus

Layia and asterid dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Layia	Yes	No	No	No
asterid dicot genus	Yes	No	No	No

As nouns, asterid dicot genus is a hypernym of Layia; that is, asterid dicot genus is a word with a broader meaning than Layia:

Layia: genus of western United States annuals with showy yellow or white flowers
asterid dicot genus: genus of more or less advanced dicotyledonous herbs and some trees and shrubs

Layia (noun)	asterid dicot genus (noun)
genus of western United States annuals with showy yellow or white flowers	genus of more or less advanced dicotyledonous herbs and some trees and shrubs