Cornus vs rosid dicot genus

Cornus and rosid dicot genus both are nouns.

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

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

Cornus: a rosid dicot genus of the family Cornaceae including: dogwood; cornel: perennial chiefly deciduous shrubs or small trees of temperate regions of Northern Hemisphere
rosid dicot genus: a genus of dicotyledonous plants

Cornus (noun)	rosid dicot genus (noun)
a rosid dicot genus of the family Cornaceae including: dogwood; cornel: perennial chiefly deciduous shrubs or small trees of temperate regions of Northern Hemisphere	a genus of dicotyledonous plants