Here's a breakdown:

* Asteroids: These are rocky or metallic bodies that orbit the Sun, primarily found in the asteroid belt between Mars and Jupiter. They are much smaller than planets.

* Planets: These are large celestial bodies that orbit the Sun and have cleared their orbital path of other objects. They are much larger than asteroids.

There are other celestial bodies that can be confused with asteroids, but here's how they differ:

* Comets: These are icy bodies that orbit the Sun and release gas and dust as they get closer to it, creating a visible tail.

* Dwarf planets: These are large enough to be round but haven't cleared their orbital paths of other objects. Pluto is a famous example of a dwarf planet.