genus Oenothera vs dicot genus

genus Oenothera and dicot genus both are nouns.

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

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

genus Oenothera: chiefly North American herbs with usually nocturnal flowers
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of genus Oenothera include magnoliopsid genus.

genus Oenothera (noun)	dicot genus (noun)
chiefly North American herbs with usually nocturnal flowers	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination