En general ambos significan Levantar, Aumentar. They're a synonym of ascend. To raise / To rise. /Reiz/ /Raiz/
La unica diferencia es que raise va acompañada de un complemento y rise va sola sin complemento. The only difference is that raise needs a complement and rise is by itself.
Example:
Raise your hand - Levanta tu mano.
The run always rises in the East - El sol siempre (sale / se levanta) por el Este