anything vs everything

anything

pron
  • Any object, act, state, event, or fact whatever; a thing of any kind; something or other. 

  • Expressing an indefinite comparison. 

adv
  • In any way, any extent or any degree. 

noun
  • Someone or something of importance. 

everything

pron
  • Many or most things. 

  • Considerable effort. 

  • A state of well-being (from all parts of the whole). 

  • All the things under discussion. 

  • The most important thing. 

noun
  • everything 

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