Helwingia vs rosid dicot genus

Helwingia and rosid dicot genus both are nouns.

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

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

Helwingia: deciduous dioecious shrubs native to woodland thickets in low mountains in Japan
rosid dicot genus: a genus of dicotyledonous plants

Helwingia (noun)	rosid dicot genus (noun)
deciduous dioecious shrubs native to woodland thickets in low mountains in Japan	a genus of dicotyledonous plants