invalid vs just

invalid

adj
  • Not valid; not true, correct, acceptable or appropriate. 

  • Suffering from disability or illness. 

  • Intended for use by an invalid. 

verb
  • To make invalid or affect with disease. 

  • To exempt from (often military) duty because of injury or ill health. 

just

intj
  • Expressing dismay or discontent. 

noun
  • A joust, tournament. 

adj
  • Factually right, correct; factual. 

  • Proper, adequate. 

  • Morally right; upright, righteous, equitable; fair. 

  • Rationally right, correct. 

verb
  • To joust, fight a tournament. 

adv
  • Only, simply, merely. 

  • absolutely, positively 

  • By a narrow margin; closely; nearly. 

  • Exactly, precisely, perfectly. 

  • Moments ago, recently. 

  • Used to convey a less serious or formal tone 

  • Used to reduce the force of an imperative; simply. 

  • Used to show humility. 

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