cashier's check vs cashier's cheque

cashier's check and cashier's cheque both are nouns.

Word	Noun	Adjective	Verb	Adverb
cashier's check	Yes	No	No	No
cashier's cheque	Yes	No	No	No

As nouns, cashier's check and cashier's cheque are synonyms defined as:

cashier's check and cashier's cheque: a check issued by the officer of a bank on the banks own account (not that of a private person)

Other synonyms of cashier's check include treasurer's check, treasurer's cheque.

cashier's check (noun)	cashier's cheque (noun)
a check issued by the officer of a bank on the banks own account (not that of a private person)	a check issued by the officer of a bank on the banks own account (not that of a private person)