text: Not trying to argue or what but Catholicism is a christian denomination BY definition. They're a follower of Christ (whether a "follower of christ" has a different definition depending on your faith/belief), therefore they're christians. Being friends with Born Again Christians, it seems like the term "Christian" has also became synonymous to them, at least in the Philippines. I'm curious though, why/how it has became onto. And btw if you're wondering OP, I'm an atheist so you can expect a "somehow" objective perspective from me.