It's not a problem, just looking for a reference that gives not just definitions and usage, but throws in examples of which preposition to use following a verb or an expression, e.g., regret (tr)--new English learners don't know if they should say regret for, regret of, regret over, reget about, regret around, regret from, and so on. Does anyone know of a resource (online or print) that can help?

The other question is: Is there a word to say the same half of a day, as in two events that happen in the morning happen in the same ____________? hemi-xxx? (Analogous to the idea that if two things happen in the US, they happen in the same hemishphere.) I had a specific reason/situation for this question, but that was long, long ago.