kidnaper vs kidnapper

kidnaper and kidnapper both are nouns.

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

As nouns, kidnaper and kidnapper are synonyms defined as:

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

Other synonyms of kidnaper include abductor, snatcher.

kidnaper (noun)	kidnapper (noun)
someone who unlawfully seizes and detains a victim (usually for ransom)	someone who unlawfully seizes and detains a victim (usually for ransom)