backwash vs risk

backwash

noun
  • The result or consequence of an event; an aftermath. 

  • The saliva, spit or food particles that have flowed back into a drink after someone has drunk from it. 

  • The backward flow of water from oars or propeller or breaking waves. 

  • The situation where economic growth in one area harms other areas by attracting people and business away from those areas. 

  • The similar flow of air from an aircraft engine. 

verb
  • To affect with backwash. 

  • To clean the oil from wool after combing. 

  • To operate a water filter in the reverse direction in order to clean it. 

risk

noun
  • A possible adverse event or outcome. 

  • A borrower (such as a mortgage-holder or person with a credit card). 

  • An entity insured by an insurer. 

  • The potential negative effect of an event, determined by multiplying the likelihood of the event occurring with its magnitude should it occur. 

  • The magnitude of possible loss consequent to a decision or event. 

  • The probability of a negative outcome to a decision or event. 

  • A type of adverse event covered under an insurance policy. 

  • A financial product (typically an investment). 

  • A thing (from the perspective of how likely or unlikely it is to cause an adverse effect). 

verb
  • To incur risk as a result of (doing something). 

  • To incur risk of harming or jeopardizing. 

  • To incur risk of (something). 

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