mobilize vs shut down

mobilize

verb
  • To get ready for war. 

  • To assemble troops and their equipment in a coordinated fashion so as to be ready for war. 

  • To make something mobile. 

shut down

verb
  • To pass (another vehicle), especially quickly. 

  • To close, terminate, or end. 

  • To turn off or stop. 

  • To emotionally withdraw into oneself as a defense mechanism; to block out external stressors. 

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