colporteur vs higgler

colporteur

noun
  • A peddler of publications, especially of religious books 

higgler

noun
  • A person who haggles or negotiates for lower prices. 

  • A seller of any kind of small produce or wares; a huckster. 

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