kidnapper vs abductor

kidnapper and abductor both are nouns.

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

As nouns, kidnapper and abductor are synonyms defined as:

kidnapper and abductor: someone who unlawfully seizes and detains a victim (usually for ransom)

Other synonyms of kidnapper include kidnaper, snatcher.

kidnapper (noun)	abductor (noun)
someone who unlawfully seizes and detains a victim (usually for ransom)	a muscle that draws a body part away from the median line
	someone who unlawfully seizes and detains a victim (usually for ransom)