invest vs unloose

invest

verb
  • To formally give (someone) some power or authority. 

  • To surround, accompany, or attend. 

  • To spend money, time, or energy on something, especially for some benefit or purpose; used with in. 

  • To commit money or capital in the hope of financial gain. 

  • To ceremonially install someone in some office. 

  • To lay siege to. 

  • To be involved in; to form strong attachments to. 

  • To prepare for lost wax casting by creating an investment mold (a mixture of a silica sand and plaster). 

  • To make investments. 

  • To envelop, wrap, cover. 

  • To formally give (power or authority). 

noun
  • An unnamed tropical weather pattern "to investigate" for development into a significant (named) system. 

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