I use 'row' as a variable name quite a lot, especially in loopy situations where it's obvious. The more problematic times are when you have things like a source

I use 'row' as a variable name quite a lot, especially in loopy situations where it's obvious. The more problematic times are when you have things like a source and a destination row dealing with, say, cows, and you call one of them 'row' and the other one 'cow\_row', and in different places pick which kind of row is which at apparent random. Or the situation with the file names, as someone else mentioned at more length.