turncock vs stopcock

turncock and stopcock both are nouns.

Word	Noun	Adjective	Verb	Adverb
turncock	Yes	No	No	No
stopcock	Yes	No	No	No

As nouns, turncock and stopcock are synonyms defined as:

turncock and stopcock: faucet consisting of a rotating device for regulating flow of a liquid

Other synonyms of turncock include cock.

turncock (noun)	stopcock (noun)
faucet consisting of a rotating device for regulating flow of a liquid	faucet consisting of a rotating device for regulating flow of a liquid
one employed to control water supply by turning water mains on and off