hawker vs higgler

hawker

noun
  • A peddler, a huckster, a person who sells easily transportable goods. 

  • Any dragonfly of the family Aeshnidae; a darner. 

  • Someone who breeds and trains hawks and other falcons; a falconer. 

higgler

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

  • A person who haggles or negotiates for lower prices. 

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