This is the 4453rd most frequent Dutch word.
christiaan
"Christiaan" is a Dutch given name meaning "Christian."
In this sentence, 'Christiaan' serves as a proper noun referring to a specific individual named Christiaan.
Christiaan heeft een nieuw boek geschreven.
Christiaan has written a new book.
Here, 'christiaan' is used as a common noun meaning 'Christian,' someone adhering to Christianity.
Hij wil een christiaan worden door zich te laten dopen.
He wants to become a Christian by getting baptized.
In this context, 'christiaan' again acts as a common noun referring to followers of Christianity, emphasizing plural generalization.