incapable vs under the influence

incapable

adj
  • Not capable (of doing something); unable. 

  • Not in a state to receive; not receptive; not susceptible; not able to admit. 

under the influence

adv
  • Intoxicated, inebriated, or otherwise stupefied by an ingested mind-altering substance, typically alcohol; drunk. 

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