Acronym tags attract misuse because the letters often stand for, or abbreviate, multiple things. A new one is adb. I drafted a wiki and excerpt for it. So far, it has only a couple of questions, so any fix will be minimal.
As a general rule, it would probably be better to have an android-debug-bridge tag, possibly with an adb tag as a synonym, but I don't know which one people who would use the tag tend to associate with.
But it's a bad idea to have just an acronym tag for something that isn't universally used in that form (like say pdf). Suggest either replacing the tag with the spelled-out name, or creating an additional, spelled out, tag and making one a synonym of the other.