If something, such as a road, is occluded, it has been closed off or blocked; therefore, cars are prevented from continuing on their way until the road is opened once again.
Occultation is the process of concealing or hiding something, its disappearance from view, or a resulting hidden state.
When something is occupied, such as a house or someone's time, it is filled.
closure or blockage (as of a blood vessel)
the principal activity in your life that you do to earn money
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