which vs you

which

det
  • What, of those mentioned or implied. 

  • The/Any ... that; whichever. 

  • Designates the one(s) previously mentioned. 

pron
  • What one or ones (of those mentioned or implied). 

  • The/Any ones that; whichever. 

  • Introduces a relative clause giving further information about something previously mentioned. 

you

det
  • Used before epithets, describing the person being addressed, for emphasis. 

  • The individual or group spoken or written to. 

noun
  • The name of the Latin-script letter U. 

pron
  • Anyone, one; an unspecified individual or group of individuals (as subject or object). 

  • (To) yourselves, (to) yourself. 

  • The people spoken to or written to, as a subject. (Replacing ye.) 

  • The person spoken to or written to, as an object. (Replacing thee; originally as a mark of respect.) 

  • The people spoken, or written to, as an object. 

  • The person spoken to or written to, as a subject. (Originally as a mark of respect.) 

verb
  • To address (a person) using the pronoun you (in the past, especially to use you rather than thou, when you was considered more formal). 

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