forge ahead vs perdure

forge ahead

verb
  • To move forward quickly, or to make good progress with (especially a plan) 

perdure

verb
  • To continue to exist, last or endure, especially for a great length of time. 

  • To exist in such a way as to possess distinct temporal parts (in perdurantism). 

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