IMO this topic merits no attention. It’s irrelevant to the OP’s question and irrelevant to the point I made. Google search frequencies mean nothing here. Nor does a creaking knowledge of software from days gone by. Many modern languages today do not use physical address pointers at all. I consider this distraction an ostentatious display of ill informed pedantry. But since it has drawn the attention of the group and wasted everybody’s time, I will explain what I meant.
In the context of software, a “link” is a generic or abstract term meaning a connection between one block of data or code and another. Like many general terms, it has no close definition. HTTP references, Dynamic Link References, File System References as well as memory blocks and data objects fall under this general category. That was all the definition needed for the purpose of of making my point to the OP. His was not a question about software definitions nor an invitation to spurious pedantry.
There are single and doubly linked lists. In common speech, by default, “linked list” means singly linked. Partly because it is by far the most common implementation. Each node in a singly linked list has just one reference to the successor element. It has no reference to its predecessor. Even though it was reached from the previous node, it does not know it and in this case the Reflexive property of the Equality operator A=7, => 7=A does not hold. I don’t understand how one would even imagine it comparable - a moment’s reflection should have made that obvious. A closer comparison would be entailment.
From A => B it does not follow that B => A.
One sometimes encounters a sequence of web pages, each with a link to the next but no back links (of course you can use the browser back arrow but the web pages’ structure does not support this) Consequently it cannot easily be traversed backward.
Likewise, memorizing the Alphabet in forward order does not automatically confer the ability to repeat it backwards fluently. Therefore, it is necessary to deliberately backlink and form a doubly linked list if one wants that facility.
That was all that was needed. This thread is not about the fine definition of software terms. I apologize to the OP for the distraction spurred by my first response. I have no further interest in this nitpicking exercise.