forearm vs fortify

forearm

verb
  • To arm in preparation. 

noun
  • The part of the arm between the wrist and the elbow. 

  • A section of the weapon between the receiver and the muzzle, used to hold the firearm steady. 

fortify

verb
  • To impart strength or vigor to. 

  • To increase the nutritional value of food by adding ingredients. 

  • To increase the defenses of; to strengthen and secure by military works; to render defensible against an attack by hostile forces. 

  • To add spirits to wine to increase the alcohol content. 

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