Every magnet has a north pole, and a south pole. Unlike electric charges, these can NOT be separated. If you cut a magnet into two smaller pieces, each one will still have a north pole and a south pole. Some theories predict that there should be "magnetic monopole" (isolated poles, that is), but so far, none have been found.
A magnets magnetism is strongest at the poles.
the poles
Like magnetic poles repel, unlike poles attract.
In magnetism, opposite poles will always attract each other.
Magnetism
Magnetism
Magnetism is one, but you can just say poles if all else fails.
Magnetism
alike magnetic poles do not attract because according to the law of magnetism, it is stated that unlike magnetic poles attract and alike poles repel.
The ends of the Earth are the North and South Poles. In terms of magnetism, the Earth's magnetic field has the North and South Magnetic Poles at opposite ends.
Magnetism
Any of the two poles will work. It will induce magnetism in the iron.