Growing like we are sometimes gaps and inconsistencies reveal themselves in our tags. Sometimes it's better to expand a tag for various reasons and sometimes it's better to split a tag for various reasons. Let's have a think about this group.
Right now we only have two of these terms as tags:
Some of the others are actual tag synonyms of one of these and some have historically been treated as though they are synonyms of these.
paperwork is older and pretty broad in name and even broader in use.
I've long thought about renaming it to paperwork-and-documentation.
One problem with tag names and coverage is how people use some of the terms involved. There can be ambiguous, between, and slippery terms.
For instance I originally chose "paperwork" because it would cover "papers" and "forms". People use "papers" to mean all the paperwork you need to carry when you travel, including documentation. Then "documentation" and "documents" are almost the same but "documents" also tends to have a specific use for "identify documents" and especially "passports" and the less common things used in special circumstances in lieu of passports. We have and definitely need a separate "passports" tag, which is fine.
Going back up the path, "forms" also covers "applications" and of course many applications and other forms are now digital and/or online.
But when talking about documents and documentation in the plural, covering all such things, it's good to have a broader tag which includes but is not limited to just passports.
Then there is "identity cards". Many countries have an actual ID card. Others including my country Australia does not have them and does not wish to have them. Yet we still have the concept of "ID" and many questions about ID work the same no matter if you're using an identify card, a driving license, a passport, or some other card.
I personally feel questions about the actual cards that do not apply to other forms of ID are not a strong enough topic on their own to need such a specific tag. And it leaves a gap where people want to ask about ID where they would use a driver's license or passport or ID but don't know which tag or tags to use. So a tag such as "identification" or "identity-documents" would be better.
But then as you see we are going to overlap with the former group.
I can think of two ways to improve this situation. One is simple and we can do it quickly and develop it from there. The other would require debate and agreement and general interest and participation.
Merge most of these tags into a new "paperwork and documents" tag. Then split off new specialized tags from that over time as the concepts gel and we see which really need to be split.
Come up with a new larger set of tags to cover these groups of concepts in the best way with the fewest possible gaps and overlaps and ambiguities.
Mull it over and post some comments and answers ...