chilli vs jalapeno

chilli and jalapeno both are nouns.

Word	Noun	Adjective	Verb	Adverb
chilli	Yes	No	No	No
jalapeno	Yes	No	No	No

As nouns, jalapeno is a hyponym of chilli; that is, jalapeno is a word with a more specific, narrower meaning than chilli:

Other hyponyms of chilli include jalapeno pepper, cayenne, cayenne pepper.

chilli (noun)	jalapeno (noun)
very hot and finely tapering pepper of special pungency	hot green or red pepper of southwestern United States and Mexico
	plant bearing very hot and finely tapering long peppers; usually red