liberate vs unloose

liberate

verb
  • To release from restraint or inhibition. 

  • To release from chemical bonds or solutions. 

  • To acquire from an enemy during wartime, used especially of cities, regions, and other population centers. 

  • To release from servitude or unjust rule. 

  • To release from slavery: to manumit. 

  • To acquire from another by theft or force: to steal, to rob. 

unloose

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

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

  • 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 liberate and unloose occurred in a corpus of books? (source: Google Ngram Viewer )