The Axis Is an imaginary line that a planet rest upon. In Earths case this line goes through the north pole and the south pole.
The spinning of a planet on it's axis is called rotation. In earths case the rotation causes day, night, and all of the seasons.
In the earths case the act of revolution is when it travels around the sun and while its travels around the sun it rotates at the same time. Orbit is fairly similar to revolution because it is a planet's course or path and is like a slightly elongated circle
The rotation of the earth causes it's seasons
The equinoxes take place halfway between the solstices. During the equinox day and night re exactly 12 hours each.
There is a Summer Solstice and a Winter Solstice. During the Summer Solstice the days are longer and during the Winter Solstice the nights are longer