It is called the planet's period.
A year.
Orbit
The path that planets take around the sun is called it's orbit. The gravitation pull of the sun keeps each planet in it's orbit. Each planets orbit varies in the time it takes to make one trip around the sun.
A year. Each planet in a solar system has a year of different length, equal to the time it takes for one complete orbit around its sun.
A year. Any planet, any length of time, for that planet once around the sun is their year.
U answer
orbit.
This is called "orbit".
The orbit of a planet around the sun is called an ellipse.
Moon
An orbit :)
A year is defined as a complete orbit around the sun.