peppercorn vs flavouring

peppercorn and flavouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
peppercorn	Yes	No	No	No
flavouring	Yes	No	No	No

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

peppercorn: pungent seasoning from the berry of the common pepper plant of East India; use whole or ground
flavouring: something added to food primarily for the savor it imparts

Other hypernyms of peppercorn include flavorer, flavoring, flavourer, seasoner, seasoning.

peppercorn (noun)	flavouring (noun)
pungent seasoning from the berry of the common pepper plant of East India; use whole or ground	something added to food primarily for the savor it imparts