Any planet is a celestial body that orbits around a star, such as our Sun. It is made up of a core, mantle, and crust and can have an atmosphere. The term 'any planet' can be broken down into two crossword solutions: WORLD (5 letters) and ORB (3 letters). WORLD is a term used to describe the Earth, or any other planet in the universe. ORB is a term used to describe the circular path a planet takes around its star.