coil vs drone

coil

noun
  • A noise, tumult, bustle, or turmoil. 

  • Any intrauterine device (Abbreviation: IUD)—the first IUDs were coil-shaped. 

  • A coil of electrically conductive wire through which electricity can flow. 

  • Entanglement; perplexity. 

  • Something wound in the form of a helix or spiral. 

  • A cylinder of clay. 

verb
  • To build a pot (etc) with clay coils. 

  • To wind cylindrically or spirally. 

  • To wind or reel e.g. a wire or rope into regular rings, often around a centerpiece. 

  • To wind into loops (roughly) around a common center. 

drone

noun
  • A humming or deep murmuring sound. 

  • One of the fixed-pitch pipes on a bagpipe. 

  • One who performs menial or tedious work. 

  • A person without the ability to think critically and independently, especially one who follows a group blindly; a non-player character. 

  • A remotely controlled aircraft, an unmanned aerial vehicle (UAV). 

  • A Toyota HiAce or a similar van, especially one used by Ugandan state agents to kidnap opposition members. 

  • A male ant, bee or wasp, which does not work but can fertilize the queen. 

  • A genre of music that uses repeated lengthy droning sounds. 

  • A low-pitched hum or buzz. 

verb
  • To speak in a monotone way. 

  • To produce a low-pitched hum or buzz. 

  • To kill with a missile fired by unmanned aircraft. 

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