flavouring vs flavoring

flavouring and flavoring both are nouns.

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

As nouns, flavouring and flavoring are synonyms defined as:

flavouring and flavoring: something added to food primarily for the savor it imparts

Other synonyms of flavouring include flavorer, flavourer, seasoner, seasoning.

flavouring (noun)	flavoring (noun)
something added to food primarily for the savor it imparts	something added to food primarily for the savor it imparts