atomiser vs atomizer

atomiser and atomizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomiser	Yes	No	No	No
atomizer	Yes	No	No	No

As nouns, atomiser and atomizer are synonyms defined as:

atomiser and atomizer: a dispenser that turns a liquid (such as perfume) into a fine mist

Other synonyms of atomiser include nebuliser, nebulizer, spray, sprayer.

atomiser (noun)	atomizer (noun)
a dispenser that turns a liquid (such as perfume) into a fine mist	a dispenser that turns a liquid (such as perfume) into a fine mist