counterweight vs equaliser

counterweight and equaliser both are nouns.

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

As nouns, counterweight and equaliser are synonyms defined as:

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

counterweight (noun)	equaliser (noun)
a weight that balances another weight	a weight that balances another weight
	electronic equipment that reduces frequency distortion

counterweight (verb)	equaliser (verb)
constitute a counterweight or counterbalance to