fallout vs risk

fallout

noun
  • A negative side effect; an undesirable or unexpected consequence. 

  • A declined offer in a sales transaction when acceptance was presumed. 

  • An impromptu guest used to fill in for another guest spot who is a no-show or who has cancelled last minute. 

  • The person who declines such an offer. 

  • The event of small airborne particles falling to the ground in significant quantities as a result of major industrial activity, volcano eruption, sandstorm, nuclear explosion, etc. 

  • The particles themselves. 

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 fallout and risk occurred in a corpus of books? (source: Google Ngram Viewer )