liegeman vs ligger

liegeman

noun
  • A male vassal (subject of a sovereign or lord). 

ligger

noun
  • A baited fishing line attached to a float, for night fishing, etc. 

  • A kelt (“thin, recently spawned salmon”). 

  • A simply supported plank over a stream used as a footbridge. 

  • A freeloader or hanger-on, especially in the music or entertainment industry. 

  • The horizontal timber of a scaffolding; a ledger. 

  • One who lies in bed. 

  • A nether millstone. 

  • A coverlet for a bed. 

  • A layer. 

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