The Asteroid Belt is the torus-shaped region of the solar system
between Mars and Jupiter where many asteroids orbit,
which includes more than 90% of known minor planets.
The term is also used in a more general sense for various
regions of the solar system with smaller populations
of similar bodies, so the above-defined asteroid belt
may be called the main asteroid belt or main belt
and an asteroid within it a main belt asteroid (MBA).
Among the other asteroid populations:
Trojan asteroids (or just Trojans), orbiting in the Trojan Points, i.e., the Sun-Jupiter Lagrangian points, L4 and L5. Smaller populations are in the equivalent points for other planets, so they are sometimes distinguished as Jupiter Trojans versus, e.g., Neptune Trojans.
The term asteroid family refers to a type of smaller subgroup
of asteroids sharing similar orbits, generally named for a particular
prominent asteroid within the family.