Revolve :)
Orbit is the word used to describe the motion of the Earth as it circles another object in space.
An object in space that circles around another object is called a satellite. Satellites can be natural, such as moons orbiting planets, or artificial, like man-made spacecraft orbiting Earth.
An object that circles another object is said to be in orbit around it. The object being circled is typically larger and exerts a gravitational force that keeps the circling object in its path. Examples of such objects include the Moon orbiting the Earth and planets orbiting the Sun.
Circles are a never ending object. They have no starting and no ending point. They have a center point and from the center to the edge of the circle is the same distance around the whole object.
it is another way of saying conjoined circles
epicycles
a cylinder ;)
A cylinder perhaps
The force that causes an object to move in circles is called centripetal force. It acts towards the center of the circular path and is responsible for maintaining the object's circular motion.
satellite.
Half a torus (a donut/doughnut)
It is a satellite.