You should flip through a moth field guide sometimes... lots of crazy names. "The Thinker", the "Grateful Midget", the "Unarmed Wainscot" etc. and a number of interesting Catacola underwing names including the Charming, Betrothed, Married, Sordid, Mourning, Sad, Tearful, Inconsolable, and Dejected Underwings. (I hope whoever named all those underwings was ok...). "Heart and dart" is actually a pretty good name, it refers to the shape of a pattern on the moth's wings.
I think "ground beetle" is pretty well established as an unambiguous common name for carabids.