cumulate vs store up

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 

store up

verb
  • To build up a supply of (something), usually for use at a particular time in the future, when the time is right. 

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