Keep in mind that according to C++ namespacing conventions, something inside a namespace has literally nothing to do with its meaning in any other namespace.

Using this reasoning advocate a style of word usage strikes me as dubious reasoning even though the usage and real reason for using it happen to be be sensible. It screams out against my instincts for how to use words. In this kind of case if there wasn't a clear relationship between the two functions you (hopefully) just would not even have considered using the same word.

I also note that in C++ the following also have literally nothing to do with each other, apart from the suggestive name, so C++ (and English, for that matter) are just as comfortable with "As well they should have".

Action should(Human aHumans);
Action should(PebbleSorter aPebbleGuy);