occlusion vs shutdown

occlusion

noun
  • The process of occluding, or something that occludes. 

  • Anything that obstructs or closes a vessel or canal. 

  • An occluded front. 

  • The absorption of a gas or liquid by a substance such as a metal. 

  • A closure within the vocal tract that produces an oral stop or nasal stop. 

  • The blocking of the view of part of an image by another. 

  • The alignment of the teeth when upper and lower jaws are brought together. 

shutdown

noun
  • The action of stopping operations; a closing, of a computer, business, event, etc. 

  • A statement, insult, etc. that prevents the opponent from replying further. 

  • An autistic response to stress or sensory overload, in which the individual freezes up and becomes silent, motionless, and unresponsive. 

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