assignment vs responsibility

assignment

noun
  • An assigned task. 

  • A transfer of a right or benefit from one person to another. 

  • A document that effects this transfer. 

  • The act of assigning; the allocation of a job or a set of tasks. 

  • The categorization of persons as belonging to the male or female sex. 

  • An operation that assigns a value to a variable. 

  • A position to which someone is assigned. 

  • A task given to students, such as homework or coursework. 

  • The categorization of something as belonging to a specific category. 

responsibility

noun
  • The obligation to carry forward an assigned task to a successful conclusion. With responsibility goes authority to direct and take the necessary action to ensure success. 

  • A duty, obligation or liability for which someone is held accountable. 

  • The state of being responsible, accountable, or answerable. 

  • The obligation for the proper custody, care, and safekeeping of property or funds entrusted to the possession or supervision of an individual. 

  • The state of being liable, culpable, or responsible for something in particular. 

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