Compounds of 積もる

• 積もる
  (v5r) (1) to pile up
  to accumulate
  (2) to estimate
  (P)
• 見積もる
  (v5r) to estimate
• 降積もる
  (v5r) to fall and pile up (e.g. snow)
  to lie thick
• 降り積もる
  (v5r) to fall and pile up (e.g. snow)
  to lie thick