trawl vs trotline

trawl

noun
  • A long fishing line having many short lines bearing hooks attached to it; a setline. 

  • A net or dragnet used for trawling. 

verb
  • To take (fish or other marine animals) with a trawl. 

  • To fish from a slow-moving boat. 

  • To make an exhaustive search for something within a defined area. 

trotline

noun
  • A long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys). 

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