intimation vs trigger finger

intimation

noun
  • The thing intimated. 

  • Announcement; declaration. 

  • The act of intimating. 

  • A hint; an obscure or indirect suggestion or notice; a remote or ambiguous reference. 

trigger finger

noun
  • the forefinger 

  • a finger used in pulling the trigger of a firearm 

  • difficulty encountered in finger flexion or extension caused by the narrowing of the sheath that surrounds that finger's tendon 

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