What is the difference between a grounded header link list and a circular header link list?

A header linked list is a linked list which always having a special node, known as the header node, at the starting of the list. The two kinds of header linked lists are:-

i. Grounder header linked list

ii. Circular header linked list

The difference among the two is that- A grounded header list is a header list where the last node having the null pointer.

A circular header list is a header list where the last node points back to the header node.