This is the 2860th most frequent Dutch word.
wouter
"Wouter" is a Dutch given name, equivalent to "Walter" in English.
Here, 'Wouter' is used as a proper noun, referring to a person's name.
Wouter speelt voetbal in de tuin.
Wouter plays soccer in the garden.
In this sentence, 'Wouter' again acts as a proper noun, specifically used with the preposition 'aan' to indicate the recipient.
Ik gaf de brief aan Wouter.
I gave the letter to Wouter.
Here, 'Wouter' has the possessive 'van' to indicate ownership of the house.