magnetism

Magnetism is the force that attracts certain metals, like iron and nickel. It's what makes some objects stick together or move towards each other.

You hear about magnetism when talking about technology, especially gadgets with small motors or speakers. For example, if your phone has a problem with its charging port, someone might say "I think it's due to the magnetism inside." But you also see magnetism in everyday life, like when a refrigerator holds up notes on the metal side with magnets, keeping them from falling off.