overcrowding

/OW1 V ER0 K R AW0 D IH0 NG/
verb
  1. 1

    To fill beyond reasonable limits, with people, animals, objects or information.

noun
  1. 1

    The situation where a space holds more occupants than it can comfortably accommodate.

Source: https://en.wiktionary.org/wiki/overcrowd, https://en.wiktionary.org/wiki/overcrowding