barfly vs swillking

barfly

noun
  • a person who spends much time in a bar or similar drinking establishment 

  • a promiscuous person, especially a woman, who frequents bars hoping to find sexual partners 

swillking

noun
  • A drunkard; said of an individual who drinks until the alcohol can be heard swillking about in their stomach. 

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