board member vs functionary

board member

noun
  • a member of the board of directors of an association or company. 

functionary

noun
  • A person employed as an official in a bureaucracy (usually corporate or governmental) who holds limited authority and primarily serves to carry out a simple function for which discretion is not required. 

  • A paper-pusher, bean counter. 

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