herb pepper vs flavouring

herb pepper and flavouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
herb pepper	Yes	No	No	No
flavouring	Yes	No	No	No

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

herb pepper: seasoning that consists of a mix of pepper and various herbs (usually basil, marjoram, oregano, sage, parsley, thyme and pepper).
flavouring: something added to food primarily for the savor it imparts

Other hypernyms of herb pepper include flavorer, flavoring, flavourer, seasoner, seasoning.

herb pepper (noun)	flavouring (noun)
seasoning that consists of a mix of pepper and various herbs (usually basil, marjoram, oregano, sage, parsley, thyme and pepper).	something added to food primarily for the savor it imparts