apocope vs procope

apocope

noun
  • The loss or omission of a sound or syllable from the end of a word. 

  • The loss or omission of the last vowel in a word, together with any consonants that follow it. 

procope

noun
  • Apheresis, the loss or removal of a sound at the beginning of a word. 

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