Poterium vs rosid dicot genus

Poterium and rosid dicot genus both are nouns.

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

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

Poterium (noun)	rosid dicot genus (noun)
a genus of thorny herbs or shrubs of the family Rosaceae	a genus of dicotyledonous plants