cooperation vs safeguard

cooperation

noun
  • Active help from a person, organization, etc., such as an orderly sharing of space or resources. 

  • The act of cooperating. 

  • Association for mutual benefit, such as for purposes of production or purchase. 

safeguard

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

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

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

verb
  • To escort safely. 

  • To implement safeguarding. 

  • To protect, to keep safe. 

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