christians are those who believe and follow christ's teachings. christians can belong to various religions or sects like orthodox, protestants.catholics,born again and many more. the common factor is the belief in jesus' (christ) teachings. there are differences in beliefs and practices in other things.
christians are trinitarians : other than believing in jesus christ, they also believe in the father,and the holy spirit.
catholics have their pope as head of their catholic church . catholics promote devotion to jesus' mother ,mary and their saints . in addition to the bible , catholics observe traditions as part of their teachings. these are some of the differences of catholicism from other religions.
in addition to jesus, van also mentions the father and the holy spirit in his
posts.