relentless vs resolute

relentless

adj

  • Unremitting, steady and persistent. 

  • Unrelenting or unyielding in severity. 

resolute

adj

  • Firm, unyielding, determined. 

noun

  • A determined person; one showing resolution. 

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