This is the 12073rd most frequent German word.
uelzen
"Uelzen" is not a standard German word; it is a proper noun referring to a town in Lower Saxony, Germany.
Uelzen is used as the name of a city in this sentence, indicating a geographical location.
Ich habe gehört, dass Uelzen eine schöne Stadt ist.
I have heard that Uelzen is a beautiful town.
Here, 'uelzen' is hypothetically used as a verb, instructing about its grammatical formation.
Im Deutschunterricht erklärte der Lehrer, wie man das Wort "uelzen" bildet.
In the German class, the teacher explained how to form the word 'uelzen'.
In this sentence, 'Uelzen' refers again to the city, showing its use as a proper noun in a visited location context.