Rotation
The spinning motion of a planet on its axis
Axis
An imaginary line that passes through a planet’s center and it’s north and South Pole, about which the planet rotate
Revolution
The movement of an object around another object
Orbit
The path of an object as it revolves around another object in space
Solstice
Either of the two days of the year on which the sun reaches it’s greatest distance north or sound of the equator
Equinox
Other of the two days of the year on which neither hemisphere is titled toward or away from the sun