There are two major types of magnets: Permanent magnets and Temporary magnets.
Permanent magnets retain their magnetism over a long period of time whereas temporary magnets retain their magnetic properties only under certain conditions like presence of a strong magnet or an electric current in the vicinity.
Magnets are available in different shapes as well. For example, bar magnets, horse-shoe magnets, magnetic needles, ring magnets or disc magnets.
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