Leucaena vs rosid dicot genus

Leucaena and rosid dicot genus both are nouns.

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

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

Leucaena: small genus of tropical evergreen trees or shrubs having pods like those of the acacia
rosid dicot genus: a genus of dicotyledonous plants

Leucaena (noun)	rosid dicot genus (noun)
small genus of tropical evergreen trees or shrubs having pods like those of the acacia	a genus of dicotyledonous plants