genus Buxus vs dicot genus

genus Buxus and dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Buxus	Yes	No	No	No
dicot genus	Yes	No	No	No

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

genus Buxus: type genus of the Buxaceae
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of genus Buxus include magnoliopsid genus.

genus Buxus (noun)	dicot genus (noun)
type genus of the Buxaceae	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination