delayer vs fainéant

delayer

noun
  • One who delays. 

  • A substance that is used to slow the rate of combustion of a solid rocket fuel so as to make it more controllable 

verb
  • To remove layers from; to strip away levels from. 

fainéant

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