assemble vs squirrel away

assemble

verb
  • To put together. 

  • To translate from assembly language to machine code. 

  • To gather as a group. 

squirrel away

verb
  • To stash or hide; to hoard, collect, save, or accumulate; to create a reserve, stash, or hoard of some supply. 

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