The words Raise and Rise are often confused and in fact they do mean the same thing - to move upwards.
Raise (Regular, transitive)
Raise, Raised, Raised, Raising
Rise (Irregular, intransitive)
Rise, Rose, Risen, Rising
However, there is a distinct difference.
Raise is a transitive verb meaning it must have a direct object.
"The restaurant raised it's prices."
"Raise your hand if you understand this!"
Rise does not work in the same way as it is intransitive and does not require an object.
"The sun rises every morning."
"Prices have risen dramatically over the years."