sorry in advance for how nsfw some of these examples are, its just tough to find sfw ones in this tag.
I was looking at the crotchless pantyhose tag and noticed a problem. Pantyhose are "A woman's stretchable one-piece undergarment consisting of stockings attached to a top that resembles underpants" according to every definition ive looked at, including the danbooru definition which says its "A type of hosiery made of a sheer material that covers from the waist to the toes", to sum up, both legs are connected at the waist or at around the waist, they are not two seperated items like thighhighs or socks.
A problem then arises when looking at the crotchless pantyhose tag, most images tagged are reverse bunnysuits which are clearly not thighhighs (most of them) but also npt pantyhose, as they do not connect together at all. I would describe them as extremely high thighhighs, or "hiphighs". They are two destinct items, not at all connected, but reach waaay beyond the thigh.
I assume this has happened because i cant find any tag which describes this hiphigh concept and people assume that crotchless pantyose would be the most applicable tag since regular bunnysuits tend to feature pantyhose.
No other crotchless tag looks like this, and its also autotagged a lot of posts with pantyhose that i think arent applicable at all. The thing is too, that there are actual crotchless pantyhose out there, its what you'll find if you look the term up on google and there are some examples of them too on danbooru.
I'll show some examples below of what I'd call ""hiphighs" currently tagged as crotchless pantyhose, and some that i think actually classify as crotchless pantyhose.
Actual crotchless pantyhose:
post #7897001
post #8583311
post #8581979
"Hiphighs":
post #8897073 (here you can see how the legs dont connect at all in the front or back
post #5315616
post #8937648
A lot of these hiphighs are also worn with a maebari which makes it look like they're sorta connected, but in that case they arent exactly crotchless either, making their inclusion in the tag a bit oss even if someone if convinced that makes them qualify as pantyhose (although i wouldn't really agree with that either).