religiosity vs pietism

religiosity and pietism both are nouns.

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

As nouns, religiosity and pietism are synonyms defined as:

religiosity and pietism: exaggerated or affected piety and religious zeal

Other synonyms of religiosity include religionism, religiousism.

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