en- vs epi-

en-

prefix
  • on, onto 

  • an intensifier 

  • caused 

  • in, into 

  • covered 

epi-

prefix
  • Above, over, on 

  • In addition to 

  • Denotes an epimeric form 

How often have the words en- and epi- occurred in a corpus of books? (source: Google Ngram Viewer )