Preoccupancy :: Preoccupancy (n.) The act or right of taking possession before another; as, the preoccupancy of wild land..
Preoccupation :: Preoccupation (n.) The act of preoccupying, or taking possession of beforehand; the state of being preoccupied; prepossession..
Preoccupy :: Preoccupy (v. t.) To take possession of before another; as, to preoccupy a country not before held..
Preoccupy :: Preoccupy (v. t.) To prepossess; to engage, occupy, or engross the attention of, beforehand; hence, to prejudice..