class of physical phenomena / From Wikipedia, the free encyclopedia

Magnetism is a force that attracts (pulls closer) or repels (pushes away) objects that have a magnetic material like iron inside them (magnetic objects). In simpler words, it is a property of substances which pull closer or repel other objects. It is a subject in physics.

Magnetic lines of force of a bar magnet shown by iron(Fe) filings on paper
A magnetized needle is floating in the air next to a metal ball