plugger vs spin doctor

plugger

noun
  • A thong or flip-flop. 

  • A dental instrument used to insert fillings. 

  • One who, or that which, plugs. 

spin doctor

noun
  • A person employed to gloss over a poor public image (or present it in a better light) in business and politics, especially after unfavourable results have been achieved. A lobbyist; PR person. 

verb
  • To generate spin (favourable interpretation or bias). 

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