scamp vs troller

scamp

noun
  • A rascal, swindler, or rogue; a ne'er-do-well. 

  • A preliminary design sketch. 

  • A mischievous person, especially a playful, impish youngster. 

troller

noun
  • A troll; a user who maliciously provokes others. 

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

  • One who fishes by trolling. 

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