certain vs faint

certain

adj
  • Unfailing; infallible. 

  • Known but not specifically named; indeterminate; indefinite; one or some; sometimes used independently as a noun, and meaning certain persons; see also "one". 

  • Fixed or stated; regular; determinate. 

  • Not to be doubted or denied; established as a fact. 

  • Sure, positive, not doubting. 

  • Actually existing; sure to happen; inevitable. 

pron
  • Unnamed or undescribed members (of). 

det
  • Having been determined but not specified. 

faint

adj
  • Lacking strength; weak; languid; inclined to lose consciousness 

  • Performed, done, or acted, weakly; not exhibiting vigor, strength, or energy 

  • Slight; minimal. 

  • Barely perceptible; not bright, or loud, or sharp 

  • Lacking courage, spirit, or energy; cowardly; dejected 

noun
  • The act of fainting, syncope. 

  • The state of one who has fainted; a swoon. 

verb
  • To decay; to disappear; to vanish. 

  • To lose consciousness through a lack of oxygen or nutrients to the brain, usually as a result of suddenly reduced blood flow (may be caused by emotional trauma, loss of blood or various medical conditions). 

  • To lose courage or spirit; to become depressed or despondent. 

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