door latch vs latch

door latch and latch both are nouns.

Word	Noun	Adjective	Verb	Adverb
door latch	Yes	No	No	No
latch	Yes	No	Yes	No

As nouns, door latch and latch are synonyms defined as:

door latch and latch: spring-loaded doorlock that can only be opened from the outside with a key

door latch (noun)	latch (noun)
spring-loaded doorlock that can only be opened from the outside with a key	catch for fastening a door or gate; a bar that can be lowered or slid into a groove
	spring-loaded doorlock that can only be opened from the outside with a key

door latch (verb)	latch (verb)
	fasten with a latch