What characteristic makes up the main difference between an asteroid and a meteoroid?

Asteroid: a large rocky body in space, in orbit around the Sun. Meteoroid: much smaller rocks or particles in orbit around the Sun. Meteor: If a meteoroid enters the Earth's atmosphere and vaporizes, it becomes a meteor, which is often called a shooting star.

The answer should be geothermal i hope i’m right message me if i’m wrong and i’ll change my answer and fix it for you