This is the 6071st most frequent Dutch word.
riyad
"Riyad" is not a Dutch word; it typically refers to the capital city of Saudi Arabia, Riyadh.
Here, 'Riyad' is used as a proper noun referring to the city.
De stad Riyad is de hoofdstad van Saudi-Arabië.
The city Riyad is the capital of Saudi Arabia.
In this sentence, 'Riyad' still refers to the city but in the context of travel.
Hij heeft een vakantie geboekt naar Riyad.
He has booked a vacation to Riyad.
Here, 'Riyad' is used to signify the cultural and geographical aspects of the location.