This is a naming question, not so much about electrical engineering.

I keep forgetting/mixing up which is the n-type and which is the p-type semiconductor.

Usually the names act like mnemonic devices for us to more easily recall which object is associated with which label/word.

What does the n stand for?

What does the p stand for?

For example, I would name it h-type form hole-type instead of p-type to remove the confusion. But I'm assuming there is already a connection like this behind the use of p and n letters - i just don't know it.

Are this just arbitrary names/letters? (doesn't make much sense to be arbitrary)

What keeps you personally from mixing the 2.