Question

Cave temples are called
and prayer halls are called​

Answer 1

Explanation:

A stupa, literally meaning heap, is a mound-like structure designed to encase Buddhist relics and other holy objects. Stupas exist all over the world and are the oldest Buddhist religious monuments.

Answer 2

A chaitya is a Buddhist shrine or prayer hall with a stupa at one end. In modern texts on Indian architecture, the term chaitya-grihais often used to denote an assembly or prayer hall that houses a stupa. About 1200 such cave temples were built throughout India. ...