claim vs duty

claim

noun
  • A legal demand for compensation or damages. 

  • The right or ground of demanding. 

  • The thing claimed. 

  • A demand of ownership for previously unowned land. 

  • A demand of ownership made for something. 

  • A new statement of something one believes to be the truth, usually when the statement has yet to be verified or without valid evidence provided. 

verb
  • To be entitled to anything; to deduce a right or title; to have a claim. 

  • To cause the loss of, usually by violent means. 

  • To demand ownership of. 

  • To demand ownership or right to use for land. 

  • To state a new fact, typically without providing evidence to prove it is true. 

  • To demand compensation or damages through the courts. 

duty

noun
  • That which one is morally or legally obligated to do. 

  • The state of being at work and responsible for or doing a particular task. 

  • A tax placed on imports or exports; a tariff. 

  • The efficiency of an engine, especially a steam pumping engine, as measured by work done by a certain quantity of fuel; usually, the number of pounds of water lifted one foot by one bushel of coal (94 lbs. old standard), or by 1 cwt. (112 lbs., England, or 100 lbs., United States). 

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