According to a diagram I saw in the Pindaya caves (Southern Shan State, Burma) there are eight main hells. And not less than 84.000 minor hells in Buddhism, so I’ve been told. Depending on your akusala (wrongful deeds) you will end up in one of the following hot hells (names in Pali)
– Samjiva, because of anger, cruelty and wickedness. The punishment comprises permanent attacks by wild creatures
– Kalasutra, because of tormenting and murdering of spiritual men, hermits and monks. The sinners are cut up by wires.
– Samghata, owing to wrong beliefs that merits and moralities are fruitless. Here you’ll be squeezed to death by big hot things.
– Rauruva, because of killing living beings by putting them into flames, boiling oil or water. Punishment is hellish screaming while you have to walk over embers.
– Maharaurawa, because of destroying and stealing the properties of the Three Gems. Here you’ll suffer by even greater screaming while being devoured by wild animals.