Step 1 : Introduction to the question "9. The vast majority of stories need to have both a protagonist and an antagonist. How are these usually better known?"
...1. Hero and villain 2. Hero and Love interest 3. Beginning and ending 4. Villain and accomplice The protagonist of a story is the main character. He/she is often referred to as the hero, although anti-heroes are becoming more and more popular. An anti-hero is a main character who, although fighting for good, isn't necessarily the most virtuous and moralistic of people, with a prime example being James Bond. In other cases, the main character of the story is actually the villain of the piece. The antagonist of the story is the opposing force to the main character, most commonly a villain. Most stories revolve around a conflict between the protagonist and the antagonist.