Poles of a Magnet
A magnetic pole is a point at either end of a magnetic field where the magnetic force is concentrated and strongest.
The earliest way to visualize the poles of a magnet is by using a bar magnet, the kind you probably came across in a science class in school.
That type of magnet is called a permanent magnet because its magnetic properties are constant. The two ends of a permanent magnet are its poles called the North pole and South pole respectively.