synchronise vs synchroniser

synchronise is not a noun while synchroniser is a noun.

Word	Noun	Adjective	Verb	Adverb
synchronise	No	No	Yes	No
synchroniser	Yes	No	No	No

synchronise (noun)	synchroniser (noun)
	an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

synchronise (verb)	synchroniser (verb)
make synchronous and adjust in time or manner
operate simultaneously
cause to indicate the same time or rate
arrange or represent events so that they co-occur
make (motion picture sound) exactly simultaneous with the action
happen at the same time