Credo
Part of speech: noun
Definition: A belief system.
Creed
Part of speech: verb
Definition: To believe; to credit.
Part of speech: noun
Definition: That which is believed; accepted doctrine, especially religious; a particular set of beliefs; any summary of principles or opinions professed or adhered to.A reading or statement of belief that summarizes the faith it represents; a definite summary of what is believed; a confession of faith for public use; esp., one which is brief and comprehensive.
Example sentence: It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so.