claw vs trigger finger

claw

noun
  • A human fingernail, particularly one extending well beyond the fingertip. 

  • The pincer (chela) of a crustacean or other arthropod. 

  • A curved, pointed horny nail on each digit of the foot of a mammal, reptile, or bird. 

  • A mechanical device resembling a claw, used for gripping or lifting. 

  • A slender appendage or process, formed like a claw, such as the base of petals of the pink. 

  • The act of catching a ball overhand. 

  • A foot equipped with such. 

verb
  • To scratch or to tear at. 

  • To use the claws to climb. 

  • To perform a claw catch. 

  • To use the claws to seize, to grip. 

  • To move with one's fingertips. 

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 claw and trigger finger occurred in a corpus of books? (source: Google Ngram Viewer )