Hinduism and Buddhism both believe in reincarnation and karma. However, Hinduism is polytheistic and believes in gods like Brahma, Vishnu, and Shiva, while Buddhism does not believe in gods. Buddhists also believe the path to nirvana is through following the Eightfold Path and eliminating desire, while Hindus seek to achieve moksha through obeying their dharma and accumulating good karma over multiple lifetimes. The caste system also influences Hindu beliefs and duties but Buddhism rejects the caste system.