super vs terrific

super

adj
  • Of excellent quality, superfine. 

  • better than average, better than usual; wonderful. 

adv
  • Very; extremely (used like the prefix super-). 

terrific

adj
  • Extremely good; excellent, amazing. 

  • Very strong or intense; excessive, tremendous. 

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