begrip vs clench

begrip

verb
  • To grip around or about; get a grip on; grasp. 

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 begrip and clench occurred in a corpus of books? (source: Google Ngram Viewer )