assemble vs pull down

assemble

verb
  • To put together. 

  • To translate from assembly language to machine code. 

  • To gather as a group. 

pull down

verb
  • To make (something) lower (especially of clothes). 

  • To cause to fall to the floor 

  • To demolish or destroy (a building etc.). 

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