clench vs unlock

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. 

unlock

verb
  • To be or become unfastened or unrestrained. 

  • To undermine something that has control over a situation; to find a way to counter or oppose. 

  • To make available. 

  • To configure (a mobile phone) so that it is not bound to any particular carrier. 

  • To undo or open a lock or something locked by, for example, turning a key, or selecting a combination. 

  • To obtain access to something; to meet the requirements of a security or protection system. 

  • To disclose or reveal previously unknown knowledge or potential. 

noun
  • The act of unlocking something. 

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