civil rights vs freedom of expression

civil rights

noun
  • The rights that can reasonably be expected by any citizen. 

  • Those rights which are expressly enumerated in the US Constitution and are considered to be unquestionable, deserved by all people under all circumstances, especially without regard to race, creed, religion, sexual orientation, gender, and disability. 

freedom of expression

noun
  • The right to express an opinion in public without being restrained or censored. 

How often have the words civil rights and freedom of expression occurred in a corpus of books? (source: Google Ngram Viewer )