cayenne pepper vs cayenne pepper

cayenne pepper and cayenne pepper both are nouns.

Word	Noun	Adjective	Verb	Adverb
cayenne pepper	Yes	No	No	No
cayenne pepper	Yes	No	No	No

cayenne pepper (noun)	cayenne pepper (noun)
ground pods and seeds of pungent red peppers of the genus Capsicum	ground pods and seeds of pungent red peppers of the genus Capsicum
a long and often twisted hot red pepper	a long and often twisted hot red pepper
plant bearing very hot and finely tapering long peppers; usually red	plant bearing very hot and finely tapering long peppers; usually red