duty

Noun

• a government tax on imports or exports
  • they signed a treaty to lower duties on trade between their countries
    

• work that you are obliged to perform for moral or legal reasons
  • the duties of the job
    

• the social force that binds you to the courses of action demanded by that force; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr
  • we must instill a sense of duty in our children
    
  • every right implies a responsibility
    

Related words

• Synonyms: 
  tariff , responsibility , obligation