cumulate vs scrape together

cumulate

verb
  • To be accumulated. 

  • To accumulate; to amass. 

noun
  • An igneous rock formed by the accumulation of crystals from a magma either by settling or floating. 

adj
  • accumulated, agglomerated, amassed 

scrape together

verb
  • To collect, assemble or gather small amounts (especially of money), from various sources, with some difficulty 

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