Cercis vs rosid dicot genus

Cercis and rosid dicot genus both are nouns.

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

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

Cercis: deciduous shrubs and trees of eastern Asia, southern Europe and the United States
rosid dicot genus: a genus of dicotyledonous plants

Cercis (noun)	rosid dicot genus (noun)
deciduous shrubs and trees of eastern Asia, southern Europe and the United States	a genus of dicotyledonous plants