especially vs i.e.

especially

adv
  • In a special manner; specially. 

  • Used to place greater emphasis upon someone or something. 

  • Particularly; to a greater extent than is normal. 

i.e.

adv
  • That is, namely, in other words, that is to say. 

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