librarian vs undertaker

librarian

noun
  • A person who processes and organizes information. 

  • The keeper, manager of a library. 

  • One who cares for the publications, files etc. in a library, whether staff or volunteer. 

undertaker

noun
  • One who undertakes or commits to doing something. 

  • A contractor for the royal revenue in England, one of those who undertook to manage the House of Commons for the king in the Addled Parliament of 1614. 

  • A person receiving land in Ireland during the Elizabethan era, so named because they gave an undertaking to abide by several conditions regarding marriage, to be loyal to the crown, and to use English as their spoken language. 

  • A funeral director; someone whose business is to manage funerals, burials and cremations. 

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