red pepper vs seasoner

red pepper and seasoner both are nouns.

Word	Noun	Adjective	Verb	Adverb
red pepper	Yes	No	No	No
seasoner	Yes	No	No	No

As nouns, seasoner is a hypernym of red pepper; that is, seasoner is a word with a broader meaning than red pepper:

red pepper: ground pods and seeds of pungent red peppers of the genus Capsicum
seasoner: something added to food primarily for the savor it imparts

Other hypernyms of red pepper include flavorer, flavoring, flavourer, flavouring, seasoning.

red pepper (noun)	seasoner (noun)
ground pods and seeds of pungent red peppers of the genus Capsicum	something added to food primarily for the savor it imparts
very hot red peppers; usually long and thin; some very small	a cook who uses seasonings