armor-plated vs touchy

armor-plated

adj
  • Covered with a hard steel plate; especially of vehicles, boats, and defenses. 

touchy

adj
  • Extremely sensitive or volatile; easily disturbed to the point of becoming unstable; requiring caution or tactfulness. 

  • Easily offended, oversensitive. 

  • Inclined to engage in physical touch. 

How often have the words armor-plated and touchy occurred in a corpus of books? (source: Google Ngram Viewer )