freedom of expression vs freedom of religion

freedom of expression

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

freedom of religion

noun
  • The right of people to hold any religious beliefs, or none, and to carry out any practices in accordance with those beliefs or with that absence of belief, so long as these practices do not interfere with other people's legal or civil rights, or any reasonable laws, without fear of harm or prosecution. 

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