pedalo vs trawler

pedalo

noun
  • A small boat propelled by pedals that directly turn external paddles, used for recreation. 

trawler

noun
  • A fishing boat that uses a trawl net or dragnet to catch fish. 

  • A fisherman who uses a trawl net. 

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