dinghy vs troller

dinghy

noun
  • A small open boat, propelled by oars or paddles, carried as a tender, lifeboat, or pleasure craft on a ship. 

  • An inflatable rubber life raft. 

  • A sailing dinghy. 

verb
  • To travel by dinghy. 

troller

noun
  • An engine-powered fishing boat, used for moving slowly while fishing lines drag behind, sometimes able to sail in shallow water. 

  • A troll; a user who maliciously provokes others. 

  • One who fishes by trolling. 

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