Arabis vs dilleniid dicot genus

Arabis and dilleniid dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arabis	Yes	No	No	No
dilleniid dicot genus	Yes	No	No	No

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

Arabis: annual to perennial woody herbs of temperate North America, Europe and Asia: rockcress
dilleniid dicot genus: genus of more or less advanced dicotyledonous trees and shrubs and herbs

Arabis (noun)	dilleniid dicot genus (noun)
annual to perennial woody herbs of temperate North America, Europe and Asia: rockcress	genus of more or less advanced dicotyledonous trees and shrubs and herbs