flavouring vs ingredient

flavouring and ingredient both are nouns.

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

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

Other hypernyms of flavouring include fixings.

flavouring (noun)	ingredient (noun)
something added to food primarily for the savor it imparts	a component of a mixture or compound
	an abstract part of something
	food that is a component of a mixture in cooking