genus Polygonum vs dicot genus

genus Polygonum and dicot genus both are nouns.

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

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

genus Polygonum: diverse genus of herbs or woody subshrubs of north temperate regions
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of genus Polygonum include magnoliopsid genus.

genus Polygonum (noun)	dicot genus (noun)
diverse genus of herbs or woody subshrubs of north temperate regions	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination