lefty vs social-democrat

lefty

noun
  • One who is left-handed. 

  • One's left testicle. 

  • One who has left-wing political views. 

adj
  • Left-wing. 

  • Intended for left-handed use. 

  • Left-handed. 

social-democrat

How often have the words lefty and social-democrat occurred in a corpus of books? (source: Google Ngram Viewer )