hob vs troll

hob

noun
  • The hub of a wheel. 

  • A rounded peg used as a target in several games, especially in quoits. 

  • A kind of cutting tool, used to cut the teeth of a gear. 

  • A male ferret. 

  • The top cooking surface on a cooker; a cooktop. It typically comprises several cooking elements (often four), also known as 'rings'. 

  • The flat projection or iron shelf at the side of a fire grate, where things are put to be kept warm. 

verb
  • To engage in the process of cutting gears with a hob. 

  • To create (a gear) by cutting with a hob. 

troll

noun
  • The act of moving round; routine; repetition. 

  • An instance of trolling, especially, in fishing, the trailing of a baited line. 

  • A song whose parts are sung in succession; a catch; a round. 

  • An ugly person of either sex, especially one seeking sexual experiences. 

  • A person who posts or says inflammatory, insincere, digressive, extraneous, or off-topic messages to provoke others on the Internet for their own personal amusement or to manipulate others' perception. 

  • A supernatural being of varying size, now especially a grotesque humanoid creature living in caves or hills or under bridges. 

  • Optical ejections from the top of the electrically active core regions of thunderstorms that are red in color that seem to occur after tendrils of vigorous sprites extend downward toward the cloud tops. 

verb
  • To trundle, to roll from side to side. 

  • To draw someone or something out, to entice, to lure as if with trailing bait. 

  • To saunter. 

  • To fish using a line and bait or lures trailed behind a boat similarly to trawling; to lure fish with bait. 

  • To fish in; to try to catch fish from. 

  • To post or make inflammatory or insincere statements so as to attempt to lure others into combative argument for purposes of personal entertainment or to manipulate others' perception, especially in an online community or discussion. 

  • To stroll about in order to find a sexual partner. 

  • To angle for with a trolling line, or with a hook drawn along the surface of the water; hence, to allure. 

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