This is the 6644th most frequent Dutch word.
waals
"Waals" means "Walloon" (relating to the French-speaking people or region in Belgium).
In this sentence, "Waalse" is used as an adjective to describe something related to Wallonia, a region in Belgium.
Hij komt uit het Waalse dorp dichtbij de grens.
He comes from the Walloon village near the border.
Here, "Waalse" modifies "landscape" to signify it belongs or is related to Wallonia.
Het Waalse landschap is bekend om zijn schoonheid.
The Walloon landscape is known for its beauty.
In this context, "Waals" is a noun referring to the Walloon language spoken in parts of Belgium.