intra- vs mal-

intra-

prefix
  • during 

  • inside, within, interior 

mal-

prefix
  • incorrect 

  • incomplete, unfinished 

  • unintentional, mistaken, accidental 

  • unpleasant 

  • poorly, deficiently 

  • not 

  • unhealthy, harmful 

  • evil 

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