This is the 10331st most frequent German word.
prien
"Prien" is not a standard German word; it is likely a proper noun, such as the name of a town (e.g., Prien am Chiemsee).
Here, 'Prien' refers to a town name, a proper noun, used as the subject of the sentence.
Prien liegt am Chiemsee und ist ein beliebtes Reiseziel.
Prien is located on the Chiemsee and is a popular travel destination.
In this sentence, 'Prien' again refers to the town and indicates the origin of the postcard.
Ich habe eine Postkarte aus Prien bekommen.
I received a postcard from Prien.
'Prien' is used here to describe the location of the vacation, indicating place.