A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For discussing spelling-related edits, asking about preferred spellings, or reporting spelling problems on the site itself. Usage of this tag may also include discussions about reasons for closing que…
if your question is about community bulletin. If you want a question to appear in the community bulletin, featured tag should be used instead.
questions related to data about the website, most likely from data.SE
The close dialog is a popup that lists available close reasons in order to vote to close a question. This tag is only for questions about the dialog itself.