concern vs works

concern

noun
  • A business, firm or enterprise; a company. 

  • The placement of interest or worry on a subject. 

  • The expression of solicitude, anxiety, or compassion toward a thing or person. 

  • That which affects one’s welfare or happiness. A matter of interest to someone. 

  • A worry; a sense that something may be wrong; an identification of a possible problem. 

  • Any set of information that affects the code of a computer program. 

verb
  • To engage by feeling or sentiment; to interest. 

  • To relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to. 

  • To make somebody worried. 

works

noun
  • A factory or factories, or similar collection(s) of buildings. 

  • A drug addict's equipment: syringe, needle, etc. 

  • Everything or everything that is available or possible; especially, all available toppings on food. 

  • A mechanism or machine; the means by which something happens. 

  • Drastic treatment; abuse; the axe (dismissal). 

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