anti- vs quasi-

anti-

prefix
  • Opposite of, reverse. 

  • Related to antiparticles or antimatter. 

  • Against, hostile to. 

  • Physically opposite: applied to mountain ranges. 

  • Indicating that a game's conventional victory conditions have been reversed: misère. 

  • Counteracting, neutralizing. 

  • Contrasting with the norm. 

  • That reacts with immunoglobins found in the specified animal. 

quasi-

prefix
  • Resembling, appearing as. 

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

  • Almost, virtually. 

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