employer vs victualler

employer

noun
  • A person, firm or other entity which pays for or hires the services of another person. 

victualler

noun
  • A supplier of victuals or supplies to an army. 

  • An innkeeper. 

  • One who deals in grain; a corn factor. 

  • A supply ship. 

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