Compounds of こもり

• 引きこもり
  (n) (1) a shut-in
  a stay-at-home
  people who withdraw from society (e.g. retire to the country)
  (2) social withdrawal
  shunning other people
  (P)
• 立てこもり
  (n) (1) shutting oneself in (one's room, etc.)
  (2) barricading oneself in (a fort, etc.) while being besieged