密集

crowding, dense concentration, close grouping

mʲ i ɕː ɨː
noun Rare #44,376
crowding, dense concentration, close grouping Often used with する to mean “to crowd” or “to be densely concentrated.”
JA: この地域では人口の密集が進んでいる。
EN: The population is becoming increasingly concentrated in this area.

世界で一番人口が密集している国はどこですか?

Which country has the highest population density in the world?

このあたりは若者が密集することが多い。

Young people often gather in large numbers around here.