fitter vs sicker

fitter

noun
  • A person who fits or assembles something. 

  • An epileptic. 

  • A person employed to find suitable music to accompany silent films. 

sicker

verb
  • To percolate, trickle, or seep; to ooze, as water through a crack. 

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