captor vs abductor

captor and abductor both are nouns.

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

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

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

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

captor (noun)	abductor (noun)
a person who captures and holds people or animals	a muscle that draws a body part away from the median line
	someone who unlawfully seizes and detains a victim (usually for ransom)