A swap dust button would be the same thing you see on the “main menu”:
Swap your dust coins for PRV.
So good to top up some PRV dust to cover fees for example.
A tumbler button in the swap section:
By clicking on this button, you divide your final amount for makimg few swaps.
I shielded 10 BNB for PRV and swap them but heuristics can prove I’m swapping.
So on clicking on tumbling I will swap 2.5 BNB 4 times progressively to break all links