This is the 16392nd most frequent Polish word.
walucie
"Walucie" is the locative form of "waluta," meaning "currency."
In this sentence, 'walucie' is used as a noun in its locative case, associated with the preposition 'w' to denote the medium of payment.
Za produkty w sklepie można zapłacić jedynie w walucie lokalnej.
You can pay for products in the store only in the local currency.
Here, 'walucie' also appears in the locative case, specifying the context of discussion about the monetary value.
W tej walucie wartość pieniądza zależy od kursu wymiany.
In this currency, the value of money depends on the exchange rate.
Here, 'walutę' is used in the accusative case, related to the action of exchanging money.