sitter vs tiler

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. 

tiler

noun
  • A doorkeeper or attendant at a lodge of Freemasons. 

  • A person who sets tiles. 

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