immortalise vs eternalise

immortalise and eternalise both are verbs.

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

As verbs, immortalise and eternalise are synonyms defined as:

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

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