depreciation vs low water

depreciation

noun
  • The decline in value of assets. 

  • The state of being depreciated; disparagement. 

  • The measurement of the decline in value of assets. Not to be confused with impairment, which is the measurement of the unplanned, extraordinary decline in value of assets. 

low water

noun
  • The temporary situation of having little money. 

  • The lowest stage of a river. 

  • The location of low tide in a coastal area. 

How often have the words depreciation and low water occurred in a corpus of books? (source: Google Ngram Viewer )