This is the 12199th most frequent German word.
vance
The word "vance" is not a German word. It may be a name or a typo.
Here, 'Vance' is used as a proper noun, a name.
Der Name des neuen Angestellten ist Vance.
The name of the new employee is Vance.
In this sentence, 'Vance' is still a proper noun, likely referring to an author or notable figure whose work was read in a course.
Im Kurs lasen wir über die Entwicklungen von Vance.
In the course, we read about the developments of Vance.
Again, 'Vance' is used as a proper noun, indicating the name of a writer.