window lock vs sash lock

window lock and sash lock both are nouns.

Word	Noun	Adjective	Verb	Adverb
window lock	Yes	No	No	No
sash lock	Yes	No	No	No

As nouns, window lock and sash lock are synonyms defined as:

window lock and sash lock: a lock attached to the sashes of a double hung window that can fix both in the shut position

Other synonyms of window lock include sash fastener.

window lock (noun)	sash lock (noun)
a lock attached to the sashes of a double hung window that can fix both in the shut position	a lock attached to the sashes of a double hung window that can fix both in the shut position