Capsicum annuum longum vs long pepper

Capsicum annuum longum and long pepper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Capsicum annuum longum	Yes	No	No	No
long pepper	Yes	No	No	No

As nouns, Capsicum annuum longum and long pepper are synonyms defined as:

Capsicum annuum longum and long pepper: plant bearing very hot and finely tapering long peppers; usually red

Other synonyms of Capsicum annuum longum include cayenne, cayenne pepper, chili pepper, chilli pepper, jalapeno.

Capsicum annuum longum (noun)	long pepper (noun)
plant bearing very hot and finely tapering long peppers; usually red	plant bearing very hot and finely tapering long peppers; usually red
	slender tropical climber of the eastern Himalayas