It can be.
When an object is seen moving in relation to a stationary object is called the frame of reference
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This is usually called a reference point. Frame of reference is not an incorrect term, but it is used less frequently.
This is usually called a reference point. Frame of reference is not an incorrect term, but it is used less frequently.
A stationary object used to gauge the movement of another object might be called the reference. This could also be termed as the point of reference.
The stationary object is known as a frame of reference. The earth is a common frame of reference for humans.
The movement in relation to a frame of reference is called relative motion. A frame of reference is a system of object that are not moving with respect to one another.
Stationary
A stationary frame of reference.
The reference point should be stationary, or not moving.
Stationary is only meaningful in regard to a defined "Reference Frame", or "Point of Reference". The object is not moving relative to that Frame or Point.
By the equivalence principles of relativity you do NOThave to choose a stationary point as a reference, Any point in space may be chosen as no point is truly "stationary" and a point that is stationary in one reference frame will be moving in another.