centralized vs middle

centralized

adj
  • Having things physically towards the center; consolidated or concentrated 

  • Having power concentrated in a single, central authority 

middle

adj
  • Located in the middle; in between. 

  • Pertaining to the middle voice. 

  • Central. 

noun
  • A centre, midpoint. 

  • The part between the beginning and the end. 

  • The middle stump. 

  • The central part of a human body; the waist. 

  • The middle voice. 

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