deputize vs designate

deputize

verb
  • to officially empower and authorize (someone) to act as a substitute in one's role or office 

  • To act as a substitute for a person in their role or office 

  • To officially empower, authorize, pronounce, and establish (someone) to be a deputy. 

designate

verb
  • To indicate or set apart for a purpose or duty; — with to or for; to designate an officer for or to the command of a post or station. 

  • To mark out and make known; to point out; to indicate; to show; to distinguish by marks or description 

  • To call by a distinctive title; to name. 

adj
  • Designated; appointed; chosen. 

  • Used after a role title to indicate that the person has been selected but has yet to take up the role. 

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