Oenanthe vs rosid dicot genus

Oenanthe and rosid dicot genus both are nouns.

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

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

Oenanthe (noun)	rosid dicot genus (noun)
wheatears	a genus of dicotyledonous plants
poisonous herbs: water dropworts