credo vs worldview

credo

noun
  • A statement of a belief or a summary statement of a whole belief system; also (metonymically) the belief or belief system itself. 

  • The liturgical creed (usually the Nicene Creed), or a musical arrangement of it for use in church services. 

worldview

noun
  • The totality of one's beliefs about reality. 

  • One's personal view of the world and how one interprets it. 

  • A general philosophy or view of life. 

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