[quietbritishjim]

Easier than a mnemonic is just remembering what real-life rows and columns are. A Roman column [1] pretty obviously has to be vertical or it wouldn't do its job of holding up a ceiling. And you get ducks in a row but they're not often stacked on top of each other.

[1] https://en.wikipedia.org/wiki/Column

[Someone]

Non-native speakers may need some help (but likely only if their language isn’t Germanic or influenced by Latin. ‘Row’ is Germanic in origin, and I think Latin ‘columna’ made it into many languages)