quasi- vs syn-

quasi-

prefix
  • Resembling, appearing as. 

  • To a limited extent or degree, to be somewhat or partially. 

  • Almost, virtually. 

syn-

prefix
  • identical 

  • with, together 

  • concomitant 

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