co- vs mal-

co-

prefix
  • of the opposite, of the counterpart; dual 

  • together; mutually; jointly 

  • to the same degree 

  • partner or subordinate in an activity 

mal-

prefix
  • incorrect 

  • incomplete, unfinished 

  • unintentional, mistaken, accidental 

  • unpleasant 

  • poorly, deficiently 

  • not 

  • unhealthy, harmful 

  • evil 

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