Piptadenia vs rosid dicot genus

Piptadenia and rosid dicot genus both are nouns.

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

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

Piptadenia: tropical American trees and shrubs; often placed in other genera
rosid dicot genus: a genus of dicotyledonous plants

Piptadenia (noun)	rosid dicot genus (noun)
tropical American trees and shrubs; often placed in other genera	a genus of dicotyledonous plants