flibbertigibbet vs trolling

flibbertigibbet

noun
  • A flighty person; someone regarded as silly, irresponsible, or scatterbrained, especially someone who chatters or gossips. 

  • An offbeat, skittish person; especially said of a young woman. 

trolling

noun
  • The act of one who trolls (in various senses). 

  • A fishing technique in which one or more baited fishing lines are dragged by a moving boat. Not to be confused with trawling, which drags a net. 

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