any vs each

any

det
  • One at all; at least one; at least one kind of; some; a positive quantity of. 

  • No matter what kind. 

pron
  • Any thing(s) or person(s). 

adv
  • To even the slightest extent, at all. 

each

det
  • All; every; qualifying a singular noun, indicating all examples of the thing so named seen as individual or separate items (compare every). 

adv
  • For one; apiece; per. 

pron
  • Every one/thing individually or one by one. 

noun
  • An individual item: the least quantitative unit in a grouping. 

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