Kidnaper and Shanghaier

Kidnaper noun - Someone who unlawfully seizes and detains a victim (usually for ransom).

Shanghaier and kidnaper are semantically related. In some cases you can replace term "Shanghaier" with "Kidnaper", this nouns are similar.

Shanghaier noun - A kidnapper who drugs men and takes them for compulsory service aboard a ship.

Kidnaper and shanghaier are semantically related. You can use "Kidnaper" instead a noun "Shanghaier".