This is the 2838th most frequent Dutch word.
vivianne
"Vivianne" is not a Dutch word; it is a personal name.
In this sentence, 'Vivianne' is a proper noun referring to a person's name, used as the subject of the sentence.
Vivianne speelt graag voetbal.
Vivianne likes to play soccer.
Here, 'Vivianne' is again a proper noun referring to a person's name, used as the indirect object of the sentence.
Ik gaf de bloemen aan Vivianne.
I gave the flowers to Vivianne.
In this example, 'Vivianne' is a proper noun identifying the person being referred to, used in the context of a reported speech scenario.