colleague vs secretary

colleague

noun
  • A fellow member of a profession, staff, academic faculty or other organization; an associate. 

verb
  • To unite or associate with another or with others. 

secretary

noun
  • A managerial or leading position in certain non-profit organizations, such as political parties, trade unions, international organizations. 

  • A type of desk, secretary desk; a secretaire. 

  • A person who keeps records, takes notes and handles general clerical work. 

  • The head of a department of government. 

  • A secretary bird, a bird of the species Sagittarius serpentarius. 

verb
  • To serve as a secretary of. 

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