What happens if ground and neutral are swapped in a light switch?
Green, yellow-green, or bare are supposed to be safety ground only.
In North America, neutral is required to be carried on white or gray wires.
If neutral is not needed in a cable, the white can be re-tasked to be a hot wire. Code now requires such white wires be marked with tape, but most installers do not.
Hots are every other color.
You have 2 white wires in that cluster. Even though they're not attached to the switch, they're equally important.  Generally a cluster of all whites are neutral.
Rarely, you'll see 1 white in a cluster of hots; that's the &quot;cable exception&quot; I mentioned above.