capturer vs surpriser

capturer and surpriser both are nouns.

Word	Noun	Adjective	Verb	Adverb
capturer	Yes	No	No	No
surpriser	Yes	No	No	No

As nouns, surpriser is a hyponym of capturer; that is, surpriser is a word with a more specific, narrower meaning than capturer:

Other hyponyms of capturer include abductor, kidnaper, kidnapper, snatcher.

capturer (noun)	surpriser (noun)
a person who captures and holds people or animals	a captor who uses surprise to capture the victim