ana- vs under-

ana-

prefix
  • backward 

  • excessive 

  • on 

  • again 

  • up 

  • apiece 

under-

prefix
  • Behind 

  • Beneath, under 

  • Subordinate to 

  • Deficient, below what is correct 

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