pietism vs religiosity

pietism and religiosity both are nouns.

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

As nouns, pietism and religiosity are synonyms defined as:

pietism and religiosity: exaggerated or affected piety and religious zeal

Other synonyms of pietism include religionism, religiousism.

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