bellhop vs sitter

bellhop

noun
  • An employee of a hotel who carries a guest's luggage and runs errands. 

verb
  • To work as a bellhop. 

sitter

noun
  • One employed to watch or tend something; a babysitter, housesitter, petsitter, etc. 

  • A very easy scoring chance. 

  • A broody hen. 

  • A participant in a séance. 

  • Someone who sits, e.g. for a portrait. 

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