Cucurbita vs dicot genus

Cucurbita and dicot genus both are nouns.

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

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

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

Other hypernyms of Cucurbita include magnoliopsid genus.

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