This is the 7819th most frequent German word.
heidenau
"Heidenau" is a German place name and does not have a direct definition in English; it refers to several towns in Germany.
Here, 'Heidenau' is used as a proper noun referring to the name of a city.
Ich besuchte die Stadt Heidenau letztes Wochenende.
I visited the city of Heidenau last weekend.
In this sentence, 'Heidenauer' is an adjective derived from the city 'Heidenau', describing someone or something related to the city.
Der Heidenauer Verein organisiert viele kulturelle Veranstaltungen.
The Heidenau community club organizes many cultural events.
Here, 'Heidenau' operates as a proper noun referring to two entities: a place and a brand name.