libation vs winecup

libation

noun
  • A beverage, especially an alcoholic one. 

  • The act of pouring a liquid, most often wine, in sacrifice on the ground, on a ritual object, or on a victim, in honor of some deity. 

  • The wine or liquid thus poured out. 

winecup

noun
  • The consumption of alcohol; drinking; alcohol as a drink. 

  • A vessel from which wine is drunk. 

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