vitaliser vs vitalizer

vitaliser and vitalizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitaliser	Yes	No	No	No
vitalizer	Yes	No	No	No

As nouns, vitaliser and vitalizer are synonyms defined as:

vitaliser and vitalizer: someone who imparts energy and vitality and spirit to other people

Other synonyms of vitaliser include animator, energiser, energizer.

vitaliser (noun)	vitalizer (noun)
someone who imparts energy and vitality and spirit to other people	someone who imparts energy and vitality and spirit to other people