Kirkia vs rosid dicot genus

Kirkia and rosid dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kirkia	Yes	No	No	No
rosid dicot genus	Yes	No	No	No

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

Kirkia (noun)	rosid dicot genus (noun)
small genus of tropical South African trees and shrubs	a genus of dicotyledonous plants