Cajanus vs genus Cajanus

Cajanus and genus Cajanus both are nouns.

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

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

Cajanus and genus Cajanus: erect densely branched shrubby perennials of Old World tropics; naturalized in other warm regions

Cajanus (noun)	genus Cajanus (noun)
erect densely branched shrubby perennials of Old World tropics; naturalized in other warm regions	erect densely branched shrubby perennials of Old World tropics; naturalized in other warm regions