assemble vs cumulate

assemble

verb
  • To put together. 

  • To translate from assembly language to machine code. 

  • To gather as a group. 

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 

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