red gram vs Cajanus cajan

red gram and Cajanus cajan both are nouns.

Word	Noun	Adjective	Verb	Adverb
red gram	Yes	No	No	No
Cajanus cajan	Yes	No	No	No

As nouns, red gram and Cajanus cajan are synonyms defined as:

red gram and Cajanus cajan: tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics

Other synonyms of red gram include cajan pea, catjang pea, dahl, dhal, pigeon-pea plant, pigeon pea.

red gram (noun)	Cajanus cajan (noun)
tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics	tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics