Disposable phone walkie

Why are these words used? serial numbers,serialkey, crack, keygen, and how do these work? - serialkey for mount and blade

Serial number and serial number, for example, that mean the same thing. GJ2A-F477-78RR-QRW7

A keygen is a program, serial numbers (serial number), produced for example. A crack for a game that generates the serial number that works for this game.

A crack is usually in the form of a file, and often need the original file with crack file, PS file and replace to replace the crack file has the same name.