unalloyed vs unmitigated

unalloyed

adj
  • Complete and unreserved; pure; unadulterated; not restricted, modified, or qualified by reservations. 

  • Not alloyed; not in mixture with other metals; pure. 

unmitigated

adj
  • Not mitigated. 

  • Total, complete, utter. 

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