perception vs realization

perception

noun
  • Conscious understanding of something. 

  • That which is detected by the five senses; not necessarily understood (imagine looking through fog, trying to understand if you see a small dog or a cat); also that which is detected within consciousness as a thought, intuition, deduction, etc. 

  • Vision (ability) 

  • The organisation, identification and interpretation of sensory information. 

  • Acuity 

realization

noun
  • An act of figuring out or becoming aware. 

  • The act of making real. 

  • The result of an artistic effort. 

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