immobilize vs prostrate

immobilize

verb
  • To render motionless; to stop moving or stop from moving. 

  • To modify a surface such that things will not stick to it 

  • To tie up a capital: make a capital investment that makes that capital unavailable. 

prostrate

verb
  • To lie flat or face-down. 

  • To throw oneself down in submission. 

  • To overcome or overpower. 

  • To cause to lie down, to flatten. 

adj
  • Lying flat, face-down. 

  • Physically incapacitated from environmental exposure or debilitating disease. 

  • Trailing on the ground; procumbent. 

  • Emotionally devastated. 

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