Question

why does a magnet have north pole and south pole,why not east pole or west ?

Answer 1

Becoz magnets have a magnetic field which only work in the way in the picture below.

Answer 2

The south-seeking pole, or any pole similar to it, is called a south magnetic pole. Unlike poles of different magnets attract each other; like poles repel each other. ... Breaking a magnet in two does not isolate its north pole from its south pole. Each half is found to have its own north and south poles.