viewfinder vs view finder

viewfinder and view finder both are nouns.

Word	Noun	Adjective	Verb	Adverb
viewfinder	Yes	No	No	No
view finder	Yes	No	No	No

As nouns, viewfinder and view finder are synonyms defined as:

viewfinder and view finder: optical device that helps a user to find the target of interest

Other synonyms of viewfinder include finder.

viewfinder (noun)	view finder (noun)
optical device that helps a user to find the target of interest	optical device that helps a user to find the target of interest