This is the 4134th most frequent Dutch word.
arno
"Arno" is not a standard Dutch word; it is typically a proper noun, such as a name.
Here, 'Arno' is used as a proper noun, referring to a person's name.
Arno is mijn collega op het werk.
Arno is my colleague at work.
In this sentence, 'Arno' refers to the name of a geographic feature, specifically a river in Italy.
De rivier de Arno stroomt door Florence.
The river Arno flows through Florence.
Here, 'Arno' is being used to reference a location associated with the renowned view of the river.