hyperfixation vs repression

hyperfixation

noun
  • A complete obsession or absorption in a subject or hobby to a point where a person appears to completely tune out their surroundings and where the person repeatedly returns to said subject or material. 

repression

noun
  • The involuntary rejection from consciousness of painful or disagreeable ideas, memories, feelings, or impulses. 

  • The act of repressing; state of being repressed. 

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