On Stack Overflow we have:
crosstab -- 107 questions -- good wiki entry.
cross-table -- 0 questions (After I retagged a few).
cross-tabulation -- 0 questions (After I retagged a few).
Moderators, can we please get cross-table and cross-tabulation made into synonyms for crosstab? There are currently only 3 ordinary users that have synonym powers on these tags.
Additionally, there is also pivot-table (205 questions).
As used on SO, "Pivot table" and "Cross Tab" are the same thing. See this Wikipedia explanation.
crosstab and pivot-table should be merged.
(See also, "Should the tags 'pivottable' and 'pivot-table' be merged and aliassed?".)