savoring vs savouring

savoring and savouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
savoring	Yes	No	No	No
savouring	Yes	No	No	No

As nouns, savoring and savouring are synonyms defined as:

savoring and savouring: taking a small amount into the mouth to test its quality

Other synonyms of savoring include degustation, relishing, tasting.

savoring (noun)	savouring (noun)
taking a small amount into the mouth to test its quality	taking a small amount into the mouth to test its quality