Spell runes are magical constructs that can be created/triggered much like a spell scroll. Runes like this are typically used to create magic items of power, from simple one use items to the legendary Runeswords*.
Item runes are items of various type that contain the essence of a particular rune, and grant abilities to anyone who possess, or attune to it.
Arcane Rune Systems:
Divine Rune Systems: Systems where the knowledge of a rune and its symbolic representation of a concept or element, allows the rune shaper to carve or inscribe the rune on an object or item. The item may grant a passive bonus, a special ability, or both, based on the rune and its tradition.
Rune Knight (change knight name)
Rune Priest Rune (Vaesir)
*Runic Weapons (a specific style) bond the life force of creatures into weapons and armor. This creates some of the most powerful weapons and items in the multiverse, but is ultimately seen as evil, destructive, and corrupting. Secretly, yugoloths retain the ability to create new rune weapons.