Origin: Greek suffix -ism
Magnetism has 3 different meanings across 1 category:
attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
"The physicist adjusted the electromagnet's coil, watching how the increasing current amplified its magnetism to pull the heavy iron bar through the air."
The property of being magnetic.
"The scientist placed a compass near the iron filings to observe their alignment due to the magnetism pulling them toward the needle."