Here's how it's used:
* Orthodox: This word means "correct opinion" or "right belief." It's often used to refer to traditional or established religious beliefs.
* Heterodox: This word means "different opinion" or "unorthodox belief." It describes beliefs that deviate from the accepted norm.
* Paradox: This word refers to a statement or proposition that seems self-contradictory or logically unacceptable, but may be true.
So, the suffix "-dox" is generally used in words related to beliefs, opinions, and doctrines.