really vs you know

really

intj
  • Indicating affirmation, agreement. 

  • Indicating that what was just said was obvious and unnecessary; contrived incredulity 

  • Indicating surprise at, or requesting confirmation of, some new information; to express skepticism. 

  • Indicating displeasure at another person's behaviour or statement. 

adv
  • Actually; in fact; in reality. 

  • Very (modifying an adjective); very much (modifying a verb). 

  • In a way or manner that is real, not unreal. 

you know

intj
  • Used as a rhetorical question to confirm agreement, knowing or understanding at the end of a statement. 

  • Expression used to imply meaning, rather than say it, such as when a person is embarrassed. 

  • Used other than figuratively or idiomatically: see you, know. 

  • Expression signifying a pause or hesitation. 

  • Used to introduce information. 

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