equaliser vs equalizer

equaliser and equalizer both are nouns.

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

As nouns, equaliser and equalizer are synonyms defined as:

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

As nouns, equaliser and equalizer are synonyms defined as:

equaliser and equalizer: electronic equipment that reduces frequency distortion

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