certified check vs certified cheque

certified check and certified cheque both are nouns.

Word	Noun	Adjective	Verb	Adverb
certified check	Yes	No	No	No
certified cheque	Yes	No	No	No

As nouns, certified check and certified cheque are synonyms defined as:

certified check and certified cheque: a check containing certification that the person who issued the check has sufficient funds on deposit to cover payment

certified check (noun)	certified cheque (noun)
a check containing certification that the person who issued the check has sufficient funds on deposit to cover payment	a check containing certification that the person who issued the check has sufficient funds on deposit to cover payment