e.g. vs viz.

e.g.

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

noun
  • An example. 

viz.

adv
  • Videlicet: namely, to wit, that is to say, specifically, as an illustration. 

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