This is the 3367th most frequent Swedish word.
arrangerar
"Arrangerar" means "arranges" or "organizes" in English.
In this sentence, 'arrangerar' signifies the act of organizing or planning an event, which is the concert in this case.
Jag arrangerar en konsert på fredag.
I am organizing a concert on Friday.
Here, 'arrangerar' means to physically arrange or organize items—in this case, flowers in a vase.
Hon arrangerar blommor i en vas.
She is arranging flowers in a vase.
'Arrangerar' in this context again implies physical arrangement, this time of furniture.