poor vs tough

poor

adj
  • Free from self-assertion; not proud or arrogant; meek. 

  • Deficient in a specified way. 

  • Of low quality. 

  • Inadequate, insufficient. 

  • Used to express pity. 

  • With no or few possessions or money, particularly in relation to contemporaries who do have them. 

noun
  • A poor person. 

  • The poor people of a society or the world collectively, the poor class of a society. 

verb
  • Synonym of impoverish, to make poor. 

tough

adj
  • Stubborn or persistent; capable of stubbornness or persistence. 

  • Harsh or severe. 

  • Difficult or demanding. 

  • Strong and resilient; sturdy. 

  • Undergoing plastic deformation before breaking. 

  • Difficult to cut or chew. 

  • Rugged or physically hardy. 

  • Rowdy or rough. 

intj
  • Used to indicate lack of sympathy 

noun
  • A person who obtains things by force; a thug or bully. 

verb
  • To endure. 

  • To toughen. 

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