synthesist vs synthesiser

synthesist and synthesiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
synthesist	Yes	No	No	No
synthesiser	Yes	No	No	No

As nouns, synthesist and synthesiser are synonyms defined as:

synthesist and synthesiser: an intellectual who synthesizes or uses synthetic methods

Other synonyms of synthesist include synthesizer.

synthesist (noun)	synthesiser (noun)
an intellectual who synthesizes or uses synthetic methods	(music) an electronic instrument (usually played with a keyboard) that generates and modifies sounds electronically and can imitate a variety of other musical instruments
	an intellectual who synthesizes or uses synthetic methods