Difference between hashmap and hashtable

what is the difference between hashmap and hashtable

@Parmeet-Kalsi-1631789033630118
Hashtables are thread safe, whereas hash maps are not.
Usually, we use hashmaps.

Hashtables are implemented using an array of linked list that is taught in the course and hashmaps are implemented using bst so do i need to know its implementation as well or just stl is fine.

Just STL is fine. Just make sure that you know the complexities of the operations and what is hashing.