Erastianism vs Caesaropapism

Erastianism and Caesaropapism both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erastianism	Yes	No	No	No
Caesaropapism	Yes	No	No	No

As nouns, Erastianism and Caesaropapism are synonyms defined as:

Erastianism and Caesaropapism: the doctrine that the state is supreme over the church in ecclesiastical matters

Other synonyms of Erastianism include Byzantinism.

Erastianism (noun)	Caesaropapism (noun)
the doctrine that the state is supreme over the church in ecclesiastical matters	the doctrine that the state is supreme over the church in ecclesiastical matters