genus Crassula vs Crassula

genus Crassula and Crassula both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Crassula	Yes	No	No	No
Crassula	Yes	No	No	No

As nouns, genus Crassula and Crassula are synonyms defined as:

genus Crassula and Crassula: type genus of Crassulaceae; herbs and small shrubs having woody stems and succulent aerial parts

genus Crassula (noun)	Crassula (noun)
type genus of Crassulaceae; herbs and small shrubs having woody stems and succulent aerial parts	type genus of Crassulaceae; herbs and small shrubs having woody stems and succulent aerial parts