This is the 4454th most frequent Polish word.
katolicyzm
"Katolicyzm" in English means "Catholicism," referring to the Christian faith and practices of the Catholic Church.
The word 'katolicyzm' is a subject and used as the name of a religion.
Katolicyzm jest główną religią w Polsce.
Catholicism is the main religion in Poland.
Here, 'katolicyzmem' is used in an instrumental case to denote the practice or association with the religion.
Wiele osób w Polsce celebruje ważne święta związane z katolicyzmem.
Many people in Poland celebrate important holidays related to Catholicism.
The word 'katolicyzmu' is used in the genitive case to discuss aspects related to the religion.