genus Brya vs rosid dicot genus

genus Brya and rosid dicot genus both are nouns.

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

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

genus Brya: genus of prickly shrubs and small trees of the Caribbean region; source of a durable hardwood
rosid dicot genus: a genus of dicotyledonous plants

genus Brya (noun)	rosid dicot genus (noun)
genus of prickly shrubs and small trees of the Caribbean region; source of a durable hardwood	a genus of dicotyledonous plants