The two beliefs that are shared between Hinduism and Buddhism are:
-
Cycle of reincarnation - Both religions believe in the cycle of birth, death, and rebirth (samsara).
-
Karma - Both Hinduism and Buddhism incorporate the concept of karma, which refers to the actions of individuals and the consequences those actions have on future rebirths.
While meditation and enlightenment are important in both traditions, the specific terms (like "nirvana") and the paths to these states can differ.