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 (called asteroid families):
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.