commission vs undertaking

commission

noun
  • The act of committing (e.g. a crime or error). 

  • A fee charged by an agent or broker for carrying out a transaction. 

  • The thing to be done as agent for another. 

  • A sending or mission (to do or accomplish something). 

  • An official charge or authority to do something, often used of military officers. 

  • A body or group of people, officially tasked with carrying out a particular function. 

verb
  • To put into active service. 

  • To send or officially charge someone or some group to do something. 

  • To place an order for (often a piece of art). 

undertaking

noun
  • The act of one who undertakes (in either sense). 

  • A promise or pledge; a guarantee. 

  • That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise. 

  • The business of an undertaker, or the management of funerals. 

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