pietism vs religiousism

pietism and religiousism both are nouns.

Word	Noun	Adjective	Verb	Adverb
pietism	Yes	No	No	No
religiousism	Yes	No	No	No

As nouns, pietism and religiousism are synonyms defined as:

pietism and religiousism: exaggerated or affected piety and religious zeal

Other synonyms of pietism include religionism, religiosity.

pietism (noun)	religiousism (noun)
exaggerated or affected piety and religious zeal	exaggerated or affected piety and religious zeal