- duty - work that you are obliged to perform for moral or legal reasons; "the duties of the job"
--1 is a kind of work
--1 has particulars:job, task, chore; function, office, part, role; assignment, duty assignment - duty, responsibility, obligation - the social force that binds you to your obligations and the courses of action demanded by that force; "we must instill a sense of duty in our children"; "every right implies a responsibility; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr
--2 is a kind of social control
--2 has particulars:- duty, tariff - a government tax on imports or exports; "they signed a treaty to lower duties on trade between their countries"
--3 is a kind of indirect tax
--3 has particulars:customs, customs duty, custom, impost; tonnage, tunnage, tonnage duty; octroi; revenue tariff; protective tariff; import duty; export duty; countervailing duty - duty, responsibility, obligation - the social force that binds you to your obligations and the courses of action demanded by that force; "we must instill a sense of duty in our children"; "every right implies a responsibility; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr