In Opinions on having (weekly) topic challenges? I asked whether we wanted to have topic challenges, that is essentially meta threads encouraging users to ask topics on a specific topics. I would like to start these on Friday (in two days), and we need to collect some interesting topics. Topics can, but don’t have to, be associated with a tag, e.g. phonology. The challenges will remain up for two weeks, so they should be somewhat broad to allow for many kinds of questions.
For convenience’s sake, simply make an answer for each topic, perhaps with some example questions or an explanation for the scope of the topic.