out- vs over-

out-

prefix
  • Greater than 

  • Toward the outside of, away from 

  • External to, on the outside of 

  • Forms verbs with the sense of surpassing or exceeding the prefixed word. This construction is productive. 

  • Completely 

  • Beyond 

over-

prefix
  • Superior. 

  • Surrounding or covering. 

  • Excessive; excessively. 

  • Exceptional; extremely or intensely. 

  • Above, or higher. 

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