subsidiser vs subsidizer

subsidiser and subsidizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
subsidiser	Yes	No	No	No
subsidizer	Yes	No	No	No

As nouns, subsidiser and subsidizer are synonyms defined as:

subsidiser and subsidizer: someone who assists or supports by giving a subsidy

subsidiser (noun)	subsidizer (noun)
someone who assists or supports by giving a subsidy	someone who assists or supports by giving a subsidy