What is the difference between a stupa and a pagoda?

Amitabha! The difference between the stupa and the pagoda is that the former does not provide viewing tours. It is a pagoda where the ashes of the temple are placed. When a master in the temple passes away, he will be burned and placed in the stupa, because there is a saying in Buddhism, After the master passed away and was incinerated, he was called a relic, so the relic pagoda came to be; and the pagoda is for pilgrims and tourists to visit, and nothing is placed inside!