coil vs ringlet

coil

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

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

  • To wind cylindrically or spirally. 

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

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

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

  • Entanglement; perplexity. 

  • A noise, tumult, bustle, or turmoil. 

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

  • A cylinder of clay. 

ringlet

verb
  • To surround or encircle like a ringlet. 

  • To form into ringlets. 

noun
  • Any of various butterflies with small rings on the wings, in the tribe Satyrini of the family Nymphalidae, such as Aphantopus hyperantus. 

  • A small ring. 

  • A lock, tress. 

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