symboliser vs symbolizer

symboliser and symbolizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
symboliser	Yes	No	No	No
symbolizer	Yes	No	No	No

As nouns, symboliser and symbolizer are synonyms defined as:

symboliser and symbolizer: someone skilled in the interpretation or representation of symbols

Other synonyms of symboliser include symbolist.

symboliser (noun)	symbolizer (noun)
someone skilled in the interpretation or representation of symbols	someone skilled in the interpretation or representation of symbols