accident vs risk

accident

noun
  • An unexpected event with negative consequences occurring without the intention of the one suffering the consequences, and (in the strict sense) not directly caused by humans. 

  • Any property, fact, or relation that is the result of chance or is nonessential or nonsubstantive. 

  • A person born from an unintended pregnancy. 

  • A collision or crash of a vehicle, aircraft, or other form of transportation that causes damage to the transportation involved; and sometimes injury or death to the transportation's occupants or bystanders in close proximity. (but see Usage notes) 

  • A property attached to a word, but not essential to it, such as gender, number, or case. 

  • An instance of incontinence. 

  • Chance; random chance. 

  • Urine or feces excreted due to incontinence. 

  • An irregular surface feature with no apparent cause. 

  • A sudden discontinuity of ground such as fault of great thickness, bed or lentil of unstable ground. 

  • A point or mark which may be retained or omitted in a coat of arms. 

  • An unintended pregnancy. 

  • Any chance event. 

  • casus; such unforeseen, extraordinary, extraneous interference as is out of the range of ordinary calculation. 

adj
  • Designating any form of transportation involved in an accident. 

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