accumulate vs collate

accumulate

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

  • To gradually grow or increase in quantity or number. 

adj
  • Collected; accumulated. 

collate

verb
  • To assemble something in a logical sequence. 

  • To examine diverse documents and so on, to discover similarities and differences. 

  • To admit a cleric to a benefice; to present and institute in a benefice, when the person presenting is both the patron and the ordinary; followed by to. 

  • To sort multiple copies of printed documents into sequences of individual page order, one sequence for each copy, especially before binding. 

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