cathlolics worship st.'s and idolize and christians rather not and christians follow mainly after christ and believe in God Jesus and the Holy Spirit are 1 while catholics believe they are seperate entities.
It's true that, all Catholics are Christian, but not all Christians are Catholic. Christians don't follow a lot of the ways of the Catholic, such as, Christians don't confess to a priest, don't take communion every Sunday, don't pray the rosary, don't pray to Marry and the saints, don't call the the pastor, father, etc.
That's like asking, "What's the difference between Oreos and cookies?" "Christian" is the broad term for any religion, denomination, sect, church or individual that has Jesus as a central figure. "Catholic" are those Christians who recognize the authority of the pope in Rome.
A key distinction between Catholics and Christians is the view of the Bible. Catholics view the Bible as having equal authority with the Church and tradition. Christians view the Bible as the supreme authority for faith and practice. The question is, how does the Bible present itself? Second Timothy 3:16-17 tells us, ?All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the man of God may be thoroughly equipped for every good work.? This text tells us that Scripture is not ?just the beginning,? or ?just the basics,? or the ?foundation for a more complete church tradition.? continue in Comment...
To be Catholic is to be fully Christian. All Catholics are Christians, but not all Christians are Catholics. A Christian is someone who believes in Jesus Christ as the Son of God and is baptized. A Catholic is a specific kind of Christian - one who also believes the Catholic Church was founded by Christ and accepts it as possessing the fullness of Christian truth and the means of salvation. Being Catholic involves three main things: (1) sincerely holding to the Catholic faith as taught by the Magisterium, which is the official teaching of the body of the Church; (2) accepting the sacraments of the Catholic Church; and (3) submitting to the teaching authority of the pope and the bishops in communion with him. (My answer continues in the comments)