clench vs toenail

clench

noun
  • A seal that is applied to formed thin-wall bushings. 

  • A tight grip. 

  • A local chapter of the Church of the SubGenius parody religion. 

verb
  • To close tightly. 

  • To grip or hold fast. 

toenail

noun
  • The thin, horny, transparent plate covering the upper surface of the end of a toe. 

verb
  • To fasten two pieces of lumber together by applying nails or screws into both boards at an angle. 

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