the world > space > relative position > arrangement or fact of being arranged > state of being gathered together > gather together [verb (intransitive)] > specifically of people or animals > in large numbers > to excess (2)
overswarm1587
intransitive. To assemble or swarm in great or excessive numbers. Also transitive (reflexive) in same sense. Obsolete.
overcrowd1889
intransitive. To fill or occupy a place beyond its capacity; to crowd together in too great a number.