prejudice vs safeguard

prejudice

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

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

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. 

safeguard

verb
  • To implement safeguarding. 

  • To escort safely. 

  • To protect, to keep safe. 

noun
  • A safe-conduct or passport, especially in time of war. 

  • Something that serves as a guard or protection; a defense. 

  • One who, or that which, defends or protects; defence; protection. 

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