Porn with a Plot; a story, character development, etc. is most important.

Gonzo - No plot, no story, just sex from beginnning to end.

Hardcore - Different people have different opinions about what is hardcore and what isn't.

Artcore - You know, it's blurry, artsy, not focused entirley on sex, but cinematic; dreamy.

Softcore - No closeup penetration shots, playboy or skinamax style.