Codiaeum vs rosid dicot genus

Codiaeum and rosid dicot genus both are nouns.

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

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

Codiaeum: evergreen tropical trees and shrubs with thick and colorful leathery leaves; Malaya and Pacific islands
rosid dicot genus: a genus of dicotyledonous plants

Codiaeum (noun)	rosid dicot genus (noun)
evergreen tropical trees and shrubs with thick and colorful leathery leaves; Malaya and Pacific islands	a genus of dicotyledonous plants