Betula vs hamamelid dicot genus

Betula and hamamelid dicot genus both are nouns.

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

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

Betula: a genus of trees of the family Betulaceae (such as birches)
hamamelid dicot genus: genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins

Betula (noun)	hamamelid dicot genus (noun)
a genus of trees of the family Betulaceae (such as birches)	genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins