Adenium vs dicot genus

Adenium and dicot genus both are nouns.

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

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

Adenium: one species: succulent shrub or tree of tropical Africa and Arabia
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Adenium include magnoliopsid genus.

Adenium (noun)	dicot genus (noun)
one species: succulent shrub or tree of tropical Africa and Arabia	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination