Spartium vs rosid dicot genus

Spartium and rosid dicot genus both are nouns.

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

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

Spartium (noun)	rosid dicot genus (noun)
one species: Spanish broom	a genus of dicotyledonous plants