declarer vs contractor

declarer and contractor both are nouns.

Word	Noun	Adjective	Verb	Adverb
declarer	Yes	No	No	No
contractor	Yes	No	No	No

As nouns, declarer and contractor are synonyms defined as:

declarer and contractor: the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps

declarer (noun)	contractor (noun)
the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps	a bodily organ that contracts
someone who claims to speak the truth	someone (a person or firm) who contracts to build things
	(law) a party to a contract
	the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps