cosset vs posset

cosset

verb
  • To treat like a pet; to overly indulge. 

  • To fondle; to touch or stroke lovingly. 

noun
  • A pet, usually a pet lamb. 

  • Someone indulged or cosseted. 

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 cosset and posset occurred in a corpus of books? (source: Google Ngram Viewer )