barfly vs toper

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 

toper

noun
  • Someone who drinks alcoholic beverages a lot; a drunkard. 

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