braze vs loosen

braze

verb
  • To cover with brass, or as with brass. 

  • To join two metal pieces, without melting them, using heat and diffusion of a jointing alloy of capillary thickness. 

noun
  • A kind of small charcoal used for roasting ore. 

loosen

verb
  • To make loose. 

  • To free from restraint; to set at liberty. 

  • To become unfastened or undone. 

  • To relieve (the bowels) from constipation; to promote defecation. 

  • To become loose. 

  • To disengage (a device that restrains). 

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