duty vs target

duty

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

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

  • 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). 

target

noun
  • A person (or group of people) that a person or organization is trying to employ or to have as a customer, audience etc. 

  • A conspicuous disk attached to a switch lever to show its position, or for use as a signal. 

  • A bearing representing a buckler. 

  • The translated version of a document, or the language into which translation occurs. 

  • A kind of small shield or buckler, used as a defensive weapon in war. 

  • The pattern or arrangement of a series of hits made by a marksman on a butt or mark. 

  • A butt or mark to shoot at, as for practice, or to test the accuracy of a firearm, or the force of a projectile. 

  • the number of runs that the side batting last needs to score in the final innings in order to win 

  • An object of criticism or ridicule. 

  • A goal or objective. 

  • The tenor of a metaphor. 

  • A person, place, or thing that is frequently attacked, criticized, or ridiculed. 

  • The sliding crosspiece, or vane, on a leveling staff. 

verb
  • To aim for as an audience or demographic. 

  • To aim something, especially a weapon, at (a target). 

  • To produce code suitable for. 

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