obfuscate vs unfold

obfuscate

verb
  • To deliberately make more confusing in order to conceal the truth. 

  • To alter code while preserving its behavior but concealing its structure and intent. 

  • Before leaving the scene, the murderer set a fire in order to obfuscate any evidence of their identity. 

  • To make dark; to overshadow. 

unfold

verb
  • To undo a folding. 

  • To release from a fold or pen. 

  • To turn out; to happen; to develop. 

  • To open (anything covered or closed); to lay open to view or contemplation; to bring out in all the details, or by successive development. 

  • To reveal. 

noun
  • In functional programming, a kind of higher-order function that is the opposite of a fold. 

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