This is the 766th most frequent Danish word.
jan
"Jan" is a common male given name in Danish.
In this context, 'Jan' is a proper noun, referring to a person's name.
Jan er en dygtig lærer.
Jan is a skilled teacher.
Here, 'Jan' is again used as a proper noun, referring to the same person's name mentioned previously.
Vi besøger Jan i weekenden.
We will visit Jan on the weekend.
The word 'Jan' is still functioning as a proper noun in this context, showing how it is used in direct address.