Yesterday’s 7-by-many contained the triplet “hereat / whereat / thereat” and whereas (is that archaic?
) “thereat” was deemed common, the other two were considered “rare”. Now, we could have a discussion as to whether they are all rare, or all common (each word got 81, 100, and 84 “hits” respectively, and I personally feel an educated person would be aware of them, even if he or she never uses them), but I would have thought if one were common, then all three were common, or vice versa…
