disc vs ringlet

disc

verb
  • To harrow with a disc harrow. 

  • To move towards, or operate at, zero blade pitch, orienting the propeller blades face-on to the oncoming airflow and maximising the drag generated by the propeller. 

noun
  • A vinyl phonograph / gramophone record. 

  • The flat surface of an organ, as a leaf, any flat, round growth. 

  • An intervertebral disc. 

  • Venus's disc cut off light from the Sun. 

  • Something resembling a disc. 

  • A thin, flat, circular plate or similar object. 

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 disc and ringlet occurred in a corpus of books? (source: Google Ngram Viewer )