delayer vs skulker

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. 

skulker

noun
  • One who avoids an obligation or responsibility. 

  • One who moves in a stealthy or furtive way; one who comes or goes while trying to avoid detection. 

  • One who stays where they cannot be seen (often in a cowardly way or with the intent of doing harm). 

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