hypnotist vs hypnotiser

hypnotist and hypnotiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypnotist	Yes	No	No	No
hypnotiser	Yes	No	No	No

As nouns, hypnotist and hypnotiser are synonyms defined as:

Other synonyms of hypnotist include hypnotizer, mesmerist, mesmerizer.

hypnotist (noun)	hypnotiser (noun)
a person who induces hypnosis	a person who induces hypnosis