hot under the collar vs inflammable

hot under the collar

adj

  • Angry; agitated. 

  • Sexually aroused. 

inflammable

adj

  • Easily excited; set off by the slightest excuse; easily enraged or inflamed. 

  • Incapable of burning; not easily set on fire. 

  • Capable of burning; easily set on fire. 

noun

  • Any inflammable substance. 

How often have the words hot under the collar and inflammable occurred in a corpus of books? (source: Google Ngram Viewer )