A person's job or profession; the act of taking control of a place or territory by military force.
From Latin 'occupatio' from 'occupare' (to seize, take possession of), composed of 'ob-' (over) + 'capere' (to take). Originally meant 'seizing' but evolved to mean both 'keeping busy' and 'one's regular work'.
The dual meaning of 'occupation' - both your day job and military takeover - stems from the same root idea of 'taking possession.' Your occupation is literally what 'occupies' your time, just as an army occupies territory.
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