clonus vs crick

clonus

noun
  • A muscular spasm with regular contractions. 

crick

noun
  • A painful muscular cramp or spasm of some part of the body, as of the neck or back, making it difficult to move the part affected. 

  • The creaking of a door, or a noise resembling it. 

  • A small jackscrew. 

verb
  • To cause to develop a crick; to create a crick in. 

  • To twist, bend, or contort, especially in a way that produces strain. 

  • To develop a crick (cramp, spasm). 

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