We distinguish between meteorites, meteors, and meteoroids.
A meteorite is usually a stone or rock that has fallen on Earth from
outer space. A meteor is the transient luminous phenomenon when an
object passes trough the Earth's atmosphere at high speed. The
atmosphere's friction causes it to heat up and glow. A meteoroid is
an extraterrestrial object, usually a remnant of a comet
(micrometeoroid), an asteroid, or a rock from the Moon or from
Mars that was ejected by a violent collision with an asteroid.
Structurally and compositionally meteoroids are related to asteroids
although the relationship is often not clear or simple.