They practice Roman Catholic religion
Nun is a word, not an acronym. It means a woman who has consecrated her life to God.
Catholic
Europeans mostly study (practice) the catholic religion.
Mainly catholic
he practiced a catholic religion
The religions that Chile practice are catholic and Protestant.
Roman Catholic
She was a Catholic nun but helped anyone of any religion. Se did not discriminate.
95 percent practice the Religion of Islam, 3 percent practice the religion Roman Catholic, or to the Baha'i Faith or Protestant.
Catholicism ( Roman Catholic).
Because Colombia was colonized by Spain, and Spain was Catholic.