delegate vs manager

delegate

noun
  • A representative at a conference, etc. 

  • A type of variable storing a reference to a method with a particular signature, analogous to a function pointer. 

  • An appointed representative in some legislative bodies. 

  • A person authorized to act as representative for another; a deputy. 

verb
  • (of a subdomain) to give away authority over a subdomain; to allow someone else to create sub-subdomains of a subdomain of one's own 

  • to authorize someone to be a delegate 

  • to commit a task to someone, especially a subordinate 

manager

noun
  • An administrator, for a singer or group. 

  • A person whose job is to manage something, such as a business, a restaurant, or a sports team. 

  • A window or application whose purpose is to give the user the control over some aspect of the system. 

  • The head coach. 

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