braze vs hold on

braze

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

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. 

hold on

verb
  • To remain loyal. 

  • To grasp or grip firmly. 

  • To persist. 

  • To keep; to store something for someone. 

  • Wait a short while. 

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