I got weird about this in the tags of a post I just reblogged, but uh… if someone says they’re Catholic or something is Catholic they likely mean Roman Catholic, sure. Usually. However, the actual word catholic doesn’t necessarily mean The Roman Catholic Church. It can refer to Christian beliefs held by many demoniations that are distinct from that of Protestantism. The word can refer to those different dominations that also practice being Catholic other than the Roman Catholics. (There is a Polish National Catholic Church for example that isn’t in full communion with Rome and therefore not Roman Catholic)
Also, the word catholic can mean universal/general, broad minded, or liberal.