unrivaled vs untopped

unrivaled

adj
  • beyond compare, far surpassing any other, unparalleled, without rival. 

untopped

adj
  • Unsurpassed. 

  • Not having had the top cut off. 

  • Not covered with a topping. 

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