This might give some interesting insight in the types of tags used together..
Q&A for students, teachers, polyglots, and anyone interested in the techniques of second-language acquisition
-- Tags that are used together - Manual edition
-- This might give some interesting insight in the types of tags used together..
SELECT TOP 1000
t2.TagName AS [Used Together With], COUNT(pt1.PostId) AS [Post Count]
FROM PostTags pt1
JOIN PostTags pt2 ON pt1.PostId = pt2.PostId
JOIN Tags t1 ON t1.TagName LIKE ##TagName:string## AND t1.Id = pt1.TagId
JOIN Tags t2 ON t2.Id = pt2.TagId
WHERE t1.TagName <> t2.TagName
GROUP BY t1.TagName, t2.TagName
ORDER BY COUNT(pt1.PostId) DESC