n.
approaching a particular destination; a coming closer; a narrowing of a gap; "the ship's rapid rate of closing gave them little time to avoid a collision"
n.
something settled or resolved; the outcome of decision making; "they finally reached a settlement with the union"; "they never did achieve a final resolution of their differences"; "he needed to grieve before he could achieve a sense of closure"
n.
a Gestalt principle of organization holding that there is an innate tendency to perceive incomplete objects as complete and to close or fill gaps and to perceive asymmetric stimuli as symmetric