unlock vs unloose

unlock

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

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

  • To disclose or reveal previously unknown knowledge or potential. 

  • To be or become unfastened or unrestrained. 

noun
  • The act of unlocking something. 

unloose

verb
  • To loosen or undo (something that entangles, fastens, holds, or interlocks). 

  • To free (someone or something) from a constraint; (figuratively) to release (something which has been suppressed, such as emotions or objectionable things). 

  • To relax or slacken (something that clasps or grips, such as the arms or hands). 

  • To become loose or come off. 

  • To free from a constraint. 

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