Both practice vegetarianism, Hinduism and Buddhism have beliefs that involve a perfect state of understanding(Hinduism-moksha Buddhism-nirvana)and a break from the chains of reincarnations, and finally Hinduism and Buddhism accept the idea of reincarnation and karma
1. Place of worship
Buddhism worships in monasteries, nunneries, pagodas and temples, whereas Hinduism mostly worships in just temples.
2. Place of origin
Buddhism originated in Nepal, India whereas Hinduism originated in an Indian sub continent. 
3. They both use statues and pictures of their god/s or "rulers". Buddhism doesn't have a god, thus people negotiate whether Buddhism in an actual religion or not. 
4. They both believe in reincarnation until one reaches the state of enlightenment or nirvana.