sash lock vs window lock

sash lock and window lock both are nouns.

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

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

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

Other synonyms of sash lock include sash fastener.

sash lock (noun)	window 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