featherbed vs posset

featherbed

verb
  • To treat someone with excessive indulgence; to pamper, cosset or mollycoddle. 

  • To engage in featherbedding; to employ more workers than necessary to fulfill a labor union requirement. 

noun
  • A mattress stuffed with feathers. 

  • A bog covered by a layer of moss, presenting a hazard to walkers. 

posset

verb
  • To treat with possets; to pamper. 

  • To vomit up curdled milk. 

noun
  • A beverage composed of hot milk curdled by some strong infusion, such as wine. 

  • A baby's vomit, comprising curdled milk. 

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