What is the difference between a head node, a head pointer, and a starting node in a data structure

Data

The start node refers to the first node in the list, and it has no direct predecessor.

The head pointer is a pointer to the start node (in the case of No head node). A single linked list can be uniquely determined by its head pointer, and a single linked list is typically named with its head pointer.

The head node is a node that is attached before the start node of the linked list. With the head node, the head pointer points to the head node, regardless of whether the linked list is empty, the head pointer is always non-empty, and the head node is set so that the first position on the list is the same as the operation in other locations in the table