immortalise vs immortalize

immortalise and immortalize both are verbs.

Word	Noun	Adjective	Verb	Adverb
immortalise	No	No	Yes	No
immortalize	No	No	Yes	No

As verbs, immortalise and immortalize are synonyms defined as:

Other synonyms of immortalise include eternalise, eternalize, eternise, eternize.

As verbs, immortalise and immortalize are synonyms defined as:

immortalise and immortalize: be or provide a memorial to a person or an event

Other synonyms of immortalise include commemorate, memorialise, memorialize.

immortalise (verb)	immortalize (verb)
make famous forever	make famous forever
be or provide a memorial to a person or an event	be or provide a memorial to a person or an event