kidney bean vs frijol

kidney bean and frijol both are nouns.

Word	Noun	Adjective	Verb	Adverb
kidney bean	Yes	No	No	No
frijol	Yes	No	No	No

As nouns, kidney bean and frijol are synonyms defined as:

kidney bean and frijol: the common bean plant grown for the beans rather than the pods (especially a variety with large red kidney-shaped beans)

Other synonyms of kidney bean include frijole.

kidney bean (noun)	frijol (noun)
large dark red bean; usually dried	the common bean plant grown for the beans rather than the pods (especially a variety with large red kidney-shaped beans)
the common bean plant grown for the beans rather than the pods (especially a variety with large red kidney-shaped beans)