This is the 1823rd most frequent Swedish word.
gästar
"Gästar" means "visits" or "is a guest."
In this sentence, 'gästar' is used to mean that she is participating in or visiting a program.
Hon gästar programmet som en expert.
She is guesting the program as an expert.
Here, 'gästar' is used to express staying over or visiting friends temporarily.
De gästar sina vänner över helgen.
They are visiting their friends over the weekend.
In this example, 'gästar' indicates the band attending and performing at the festival.