Summary: When you work with many speech varieties, you need to keep each one from getting mixed up with others. Well chosen metadata make this possible. The Varieties tab of Wordcorr handles the metadata for varieties.
Wordcorr helps you compare different speech varieties. People often want to know if these are "languages" or "dialects." But it makes better sense to think about that distinction after we have done the analysis, rather than making it the starting point.
So when the ordinary speech of two social groups is different enough to notice, we can say they speak different speech varieties. That's a usefully neutral term -- we can use it without having to argue about whether the varieties should be called separate languages or dialects. Later, we should have enough information to state the ways in which they differ, and how each got to be the way it is. At that point both politics and inherent intelligibility can reasonably come into the picture.
Wordcorr comes in at the stage of identifying the systematic, regular differences among speech varieties.
Some of the things that need to be kept track of for each speech variety are
Wordcorr collections are arrangements of parallel word lists from speech varieties you want to compare. Accordingly, you have to give Wordcorr enough information via the Varieties panel to not get any two of the varieties mixed up. This information that is kept in Wordcorr, or metadata (data about data), is also the key to letting other linguists know what is in your collection, so that you can possibly get together and collaborate on the analysis.