Vinca vs dicot genus

Vinca and dicot genus both are nouns.

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

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

Vinca: periwinkles: low creeping evergreen perennials
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Vinca include magnoliopsid genus.

Vinca (noun)	dicot genus (noun)
periwinkles: low creeping evergreen perennials	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination