protestantism

As a noun protestantism

is the protestant (rather than the roman catholic or orthodox) christian faith.

As a verb unprotestantize is

to cause to change from protestantism to some other form of religion.

As nouns the difference between protestantism and arminianism

is that protestantism is the protestant (rather than the roman catholic or orthodox) christian faith while arminianism is a school of thought within protestantism based on the theological ideas of.

Pentecostalism is a hypernym of protestantism.

As nouns the difference between protestantism and pentecostalism

is that protestantism is the Protestant (rather than the Roman Catholic or Orthodox) Christian faith while Pentecostalism is christian religious movement that emphasizes the Holy Spirit and is known for speaking in tongues.