erosion

noun

erosion by chemical action
化学作用による浸食
the mechanical process of wearing or grinding something down (as by particles washing over it)
何かを磨滅または摩る技術的過程（それを摩耗させる粒子によって）
a gradual decline of something
何かのゆるやかな衰退
- after the accounting scandal there was an erosion of confidence in the auditors
  会計疑惑の後、会計検査官の信頼感が低下した
condition in which the earth's surface is worn away by the action of water and wind
地球表面が水や風の働きによってすり減っていく状況