disassemble vs heap up

disassemble

verb
  • To take to pieces; to reverse the process of assembly. 

  • To convert machine code to a human-readable, mnemonic form. 

heap up

verb
  • To make an untidy pile of (something). 

  • To increase over a period of time; to accumulate. 

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