apprentice vs secretary

apprentice

verb
  • To put under the care and supervision of a master, for the purpose of instruction in a trade or business. 

  • To be an apprentice to. 

noun
  • A trainee, especially in a skilled trade. 

  • One who is bound by indentures or by legal agreement to serve a tradesperson, or other person, for a certain time, with a view to learn the art, or trade, in which his master is bound to instruct him. 

secretary

verb
  • To serve as a secretary of. 

noun
  • 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. 

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

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