e.g. vs especially

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. 

especially

adv
  • Used to place greater emphasis upon someone or something. 

  • In a special manner; specially. 

  • Particularly; to a greater extent than is normal. 

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