article of faith vs conviction

article of faith and conviction both are nouns.

Word	Noun	Adjective	Verb	Adverb
article of faith	Yes	No	No	No
conviction	Yes	No	No	No

As nouns, article of faith and conviction are synonyms defined as:

article of faith and conviction: an unshakable belief in something without need for proof or evidence

Other synonyms of article of faith include strong belief.

article of faith (noun)	conviction (noun)
an unshakable belief in something without need for proof or evidence	(criminal law) a final judgment of guilty in a criminal case and the punishment that is imposed
(Christianity) any of the sections into which a creed or other statement of doctrine is divided	an unshakable belief in something without need for proof or evidence