far off, distant: removed by a wide gap, whether in space, in time, or in closeness.
This is the ordinary word a Hebrew speaker reached for to say that something is a long way off. Its home base is physical distance: a place you can barely see on the horizon, a country at the far edge of the earth, an army marching in from a land nobody has heard of. From there the same word stretches naturally to other kinds of distance, because the picture of a wide gap fits more than just geography.
Stretched across time, it points either far back into the past or far ahead into the future, so the prophets use it for things God planned long ago and for promises that reach generations down the line. Stretched across relationships, it describes people or God as standing at a remove: the distant nations as opposed to the people close at hand, or, most painfully, God seeming far off when a sufferer cries out. And pushed all the way to the figurative edge, it can mean simply out of reach, beyond what a person can grasp or afford.
These are not different words; they are the same plain idea of distance read off different scales. Context, not the word itself, tells a reader which kind of distance is in view, and the word often gets its full force from sitting opposite its natural partner, קָרוֹב, the word for near.