invalid vs worthy

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. 

worthy

noun
  • A distinguished or eminent person. 

adj
  • Having worth, merit, or value. 

  • Deserving, or having sufficient worth. 

  • Admirable or honourable. 

  • Suited; suitable; befitting. 

verb
  • To render or treat as worthy; exalt; revere; honour; esteem; respect; value; reward; adore. 

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