undiluted vs unmitigated

undiluted

adj
  • Not diluted or mixed with other substances. 

  • Pure; unadulterated; free from extraneous elements. 

unmitigated

adj
  • Not mitigated. 

  • Total, complete, utter. 

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