prejudice vs reinforce

prejudice

verb
  • To cause prejudice in; to bias the mind of. 

  • To have a negative impact on (someone's position, chances etc.). 

noun
  • An adverse judgment or opinion formed beforehand or without knowledge of the facts. 

  • A preconception, any preconceived opinion or feeling, whether positive or negative. 

  • An irrational hostile attitude, fear or hatred towards a particular group, race or religion. 

reinforce

verb
  • To emphasize or review. 

  • To strengthen, especially by addition or augmentation. 

  • To encourage (a behavior or idea) through repeated stimulus. 

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