captor vs snatcher

captor and snatcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
captor	Yes	No	No	No
snatcher	Yes	No	No	No

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

captor: a person who captures and holds people or animals
snatcher: someone who unlawfully seizes and detains a victim (usually for ransom)

Other hyponyms of captor include abductor, kidnaper, kidnapper, surpriser.

captor (noun)	snatcher (noun)
a person who captures and holds people or animals	someone who unlawfully seizes and detains a victim (usually for ransom)
	a thief who grabs and runs