accumulate vs put to use

accumulate

adj
  • Collected; accumulated. 

verb
  • To gradually grow or increase in quantity or number. 

  • To heap up in a mass; to pile up; to collect or bring together (either literally or figuratively) 

put to use

verb
  • To use; to utilise; to apply. 

How often have the words accumulate and put to use occurred in a corpus of books? (source: Google Ngram Viewer )