This is the 556th most frequent Danish word.
haderslev
Haderslev is the name of a town in southern Denmark.
Here, 'Haderslev' is used as a proper noun referring to a specific location: the town of Haderslev in Denmark.
Jeg havde en vidunderlig tur til Haderslev i sidste uge.
I had a wonderful trip to Haderslev last week.
Here, 'Haderslev' identifies the town and is the subject of the sentence, being described historically.
Vidste du, at Haderslev har en historie, der går tilbage til middelalderen?
Did you know that Haderslev has a history that dates back to the Middle Ages?
In this sentence, 'Haderslev' is again a proper noun, demonstrating emphasis on its natural landmarks.