Alnus vs hamamelid dicot genus

Alnus and hamamelid dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alnus	Yes	No	No	No
hamamelid dicot genus	Yes	No	No	No

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

Alnus: alders
hamamelid dicot genus: genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins

Alnus (noun)	hamamelid dicot genus (noun)
alders	genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins