Usually absolute and relative are the two ways of measuring.
Absolute zero is an absolute measurement because it needs no other reference point to define it. When all random molecular or atomic movement stops within a body its temperature is said to be at absolute zero.
If, however, today's temperature is 5 degrees higher than yesterday's, this is a relative measurement because it compares two values.
The speed of light in a vacuum is an absolute measurement because it needs no frame of reference to define it.
An object at rest on the earth's surface is only at rest relative to the earth. The object rotates with the earth so it has an angular velocity. And the earth itself is rotating but is also moving along its orbit around the sun. The sun is also moving in space, so the relative speed or velocity of the apparently stationary object is zero relative to the earth, but its absolute speed or velocity are undefinable or meaningless because no absolute frame of reference can be identified.