Vision is a Tool for the Beholder and a Weapon to the Viewed

Perhaps the easiest way to describe anything is by its appearance. One thinks of an apple as red, an orange as well... orange, the grass as green , and the sky as blue. It is much simpler to describe them this way because to go beyond that and say what they actually are is more difficult. This provides partial reasoning to both the first and second prompts.

The first thing that comes to most people's minds when they hear the word "monster" is a large, grotesque creature. Then their minds wander to why the monster is even scarier (it eats people, or does something else evil.) This has been an enormous hindrance in society - extremely so in the past, and still somewhat prevalent today. When you see somebody and they look different from you, one immediately forms a judgment just based on initial appearance. Even if that person is the nicest person in the world, one could overlook that due to first impressions. This led to racism and also is the reason behind Frankenstein's monster's struggles in the novel.

In order to show Frankenstein's monster as indeed monstrous in films, he had to look hideous, since that is what people would judge first. If he looked like a "normal" human being, it would take a while to form an opinion on him. The name Frankenstein has become almost synonymous with the monster for potentially a few different reasons. First, people often associate a weird name to someone who looks different. This even applies in today's society. Second, giving a name to a monster almost makes it less frightening. A nameless being terrorizing society is frightening, but if you can give it a name, everyone can at least direct their fear in one direction. The third less satisfying answer is just that some people aren't familiar enough with the story, so that is an easy name to remember.

I prefer the first reason because names really do play an impact on perception. I don't want to stray from the prompt, but if you think about it, you probably eat food that has a delicious-sounding name or might drive a car with a cool name. Even subconsciously, this probably makes it easier to cast out somebody as a monster if they have a "weird" name, such as Frankenstein.