savior vs saviour

savior and saviour both are nouns.

Word	Noun	Adjective	Verb	Adverb
savior	Yes	No	No	No
saviour	Yes	No	No	No

As nouns, savior and saviour are synonyms defined as:

Other synonyms of savior include deliverer, rescuer.

savior (noun)	saviour (noun)
a person who rescues you from harm or danger	a person who rescues you from harm or danger