Difference between Piastre and Piaster

What is the difference between Piastre and Piaster?

Piastre as a noun is a form of currency used in the middle eastern countries of egypt, lebanon, sudan and syria while Piaster as a noun is the subdivision of the south sudanese pound, equal to 1/100 of a pound

We hope you now know whether to use Piastre or Piaster in your sentence.