assured vs insured

assured

noun

  • An insured person. 

adj

  • Guaranteed; secure. 

  • Self-confident; self-assured; sure. 

insured

noun

  • The person or persons whose interests are protected by an insurance policy. 

adj

  • Covered by an insurance policy. 

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