Sarcostemma vs dicot genus

Sarcostemma and dicot genus both are nouns.

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

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

Sarcostemma: succulent subshrubs or vines; tropical and subtropical India and Africa and Malaysia
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Sarcostemma include magnoliopsid genus.

Sarcostemma (noun)	dicot genus (noun)
succulent subshrubs or vines; tropical and subtropical India and Africa and Malaysia	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination