Light / sound symbolism in chars

Opinions please: if I’m modeling a character-duo dynamic on light vs. sound, which one would correspond to motivation and which to action?

I can see reasons for both, and will probably mix and match and make it muddy, but I want a primary symbolism and I’m curious where your trains of thought will go! Thanks!

I’d go with light for motivation and sound for action, but I feel like this is the sorta thing where you have to go with your gut and not overthink it.

If you want to know the reasoning behind my choice, it’s because I think of sound effects as action-y and light… I can’t really explain that one other than it feels right. Again, no point in overthinking. I’d probably end up confusing the both of us if I attempted to put it into words.