equalizer vs equaliser

equalizer and equaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
equalizer	Yes	No	No	No
equaliser	Yes	No	No	No

As nouns, equalizer and equaliser are synonyms defined as:

Other synonyms of equalizer include balance, counterbalance, counterpoise, counterweight.

As nouns, equalizer and equaliser are synonyms defined as:

equalizer and equaliser: electronic equipment that reduces frequency distortion

equalizer (noun)	equaliser (noun)
a score that makes the match even	a weight that balances another weight
a weight that balances another weight	electronic equipment that reduces frequency distortion
electronic equipment that reduces frequency distortion