Compounds of 積

• 上積み
  (n) (1) deck cargo
  upper layer of goods
  (adj-f) (2) extra
  (vs) (3) to pile on top of
  (P)
• 積み荷
  (n) load
  freight
  cargo
• 積み肥
  (n) compost
  manure
• 積み木
  (n) (toy) building blocks
  bricks
• 積もり
  (n) (1) (uk) intention
  plan
  (2) conviction
  belief
  (P)
• 積もる
  (v5r) (1) to pile up
  to accumulate
  (2) to estimate
  (P)
• 積り書
  (n) written estimate
• 積ん読
  (n) buying books and not reading them
  (P)
• 積極策
  (n) positive plan
  constructive policy
• 積極性
  (n) assertiveness
  positiveness
• 積極的
  (adj-na) assertive
  positive
  active
  proactive
  (P)
• 積載量
  (n) loading capacity
• 積算法
  (n) integration
• 積集合
  (n) (math) intersection
• 積雪量
  (n) snowfall
• 積分学
  (n) integral calculus
• 積分器
  (n) (comp) integrator
• 積分法
  (n) integration
• 積乱雲
  (n) cumulonimbus cloud
• 積立金
  (n) deposit
  (P)
• 船積み
  (n,vs) lading
  shipment
• 全面積
  (n) total size (of land)
  square measure
• 層積雲
  (n) stratocumulus
• 相乗積
  (n) (math) product
• 堆積学
  (n) sedimentology
• 堆積岩
  (n) sedimentary rock
• 堆積層
  (n) sedimentary layer
• 堆積物
  (n) sediment
  deposit
• 蓄積管
  (n) storage tube
• 中積み
  (n) loading in the middle