Virgilia vs rosid dicot genus

Virgilia and rosid dicot genus both are nouns.

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

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

Virgilia: genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods
rosid dicot genus: a genus of dicotyledonous plants

Virgilia (noun)	rosid dicot genus (noun)
genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods	a genus of dicotyledonous plants