Article note: There are a few things I notice that are a little odd as far as attribution lines, but it's a nice chart with a ton of truly obscure things broken out.
…it is also true that in modern times the term “pornography” connotes mediocrity, commercialism, and certain strict rules of narration. Obscenity must be mated with banality because every kind of aesthetic enjoyment has to be replaced by simple sexual stimulation which demands the traditional word for direct action on the patient.