poppy seed vs flavouring

poppy seed and flavouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
poppy seed	Yes	No	No	No
flavouring	Yes	No	No	No

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

poppy seed: small grey seed of a poppy flower; used whole or ground in baked items
flavouring: something added to food primarily for the savor it imparts

Other hypernyms of poppy seed include flavorer, flavoring, flavourer, seasoner, seasoning.

poppy seed (noun)	flavouring (noun)
small grey seed of a poppy flower; used whole or ground in baked items	something added to food primarily for the savor it imparts