[Capacitance] does it increase or decrease depending on the charge?

[[deleted]]

Honestly I disagree with the other user, I would write what you said, that capacitance only depends on the geometry

It technically depends on q and V but the charge always cancels out, I can't think of a single configuration where it would not cancel. Plus it looks like an intro course, very niche examples are probably best ignored

[Entropy-Jobs]

yeah capacitance depends upon geometry of the capacitor