Ok, I'm trying to figure out exactly how such bases and templates work exactly.

I would think that the items with bases/templates would take on the characteristics of those bases/templates. However, I'm not so sure if that's the case.

I tried to give a shock damage enchantment a base of a fire damage enchantment. I was hoping it would provide both shock and fire damage, though it ended up only causing shock damage. Perhaps I'm missing something?

Also, do keywords of templates/bases also transfer to items that are based on them?

Thank you!

Ok, good news! It seems that armor template keywords transfer. At least from what I can tell. I'm not so sure about weapon/enchantment bases, though.

Base Enchantments are what the player learns when the item gets disenchanted. I think that might be the only thing it does.

Ah, that makes sense, thank you!

It appears that Weapon Bases act as Armor Templates, though. Not sure why they are not also called templates.