interrupt vs obstruct

interrupt

verb
  • To disturb or halt (an ongoing process or action, or the person performing it) by interfering suddenly. 

  • To assert to (a computer) that an exceptional condition must be handled. 

  • To divide; to separate; to break the monotony of. 

noun
  • An event that causes a computer or other device to temporarily cease what it was doing and attend to a condition. 

obstruct

verb
  • To impede, retard, or interfere with; hinder. 

  • To get in the way of so as to hide from sight. 

  • To block or fill (a passage) with obstacles or an obstacle. See synonyms at block. 

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