case in point vs e.g.

case in point

noun

  • An example that illustrates a point. 

e.g.

noun

  • An example. 

adv

  • "for example" or "for the sake of an example": used to introduce an illustrative example or short list of examples. 

How often have the words case in point and e.g. occurred in a corpus of books? (source: Google Ngram Viewer )