Non$-$ionizing radiation and Ionizing radiation are different because:

Ionizing radiation causes cancer immediately while non$-$ionizing causes cancer over long periods of time

Ionizing radiation strips electrons from atoms and can harm biological cells while Non$-$ionizing radiation does not

Ionizing radiation is cosmic radiation while non$-$ionizing is non$-$cosmic

They both have the ability to ionize biological tissues but only non$-$ionizing is harmful