Since the advent of printed circuit boards, as far as I'm aware, PCB tracks have always been known as, well, 'tracks'! I've certainly always referred to them as such.
Gradually, though, over the last couple of years, the word 'trace' seems to have crept into use. Where did that come from?
It's almost as bad as hearing circuit diagrams referred to as 'schematics' and seeing resistors drawn as rectangular boxes rather then a zig zag line!
I don't doubt older folk had similar horrors when their 'condensors' suddenly changed into capacitors!
And don't get me started on 5 band resistor colour codes- a 10K should look like a 10K....
I must be getting old!
Cheers
Nick