clasp vs clench

clasp

verb
  • To take hold of; to grasp. 

  • To shut or fasten together with, or as if with, a clasp. 

noun
  • A fastener or holder, particularly one that clasps. 

  • An embrace, a grasp, or handshake. 

clench

verb
  • To grip or hold fast. 

  • To close tightly. 

noun
  • A tight grip. 

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

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

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