circumstellar disk
torus, pancake or ring-shaped accumulation of matter in orbit around a star
asteroid belt
the circumstellar disk (accumulation of matter) in an orbit around Sun between those of Mars and Jupiter
protoplanetary disk
rotating circumstellar disk of dense gas surrounding a young newly formed star
Kuiper Belt
area of the Solar System beyond the planetary orbits comprising small bodies
debris disk
circumstellar disk of dust and debris in orbit around a star