Aethusa vs rosid dicot genus

Aethusa and rosid dicot genus both are nouns.

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

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

Aethusa (noun)	rosid dicot genus (noun)
fool's parsley	a genus of dicotyledonous plants