chili pepper vs chile

chili pepper and chile both are nouns.

Word	Noun	Adjective	Verb	Adverb
chili pepper	Yes	No	No	No
chile	Yes	No	No	No

As nouns, chili pepper and chile are synonyms defined as:

chili pepper and chile: very hot and finely tapering pepper of special pungency

Other synonyms of chili pepper include chili, chilli, chilly.

chili pepper (noun)	chile (noun)
very hot and finely tapering pepper of special pungency	very hot and finely tapering pepper of special pungency
plant bearing very hot and finely tapering long peppers; usually red