This is the 6327th most frequent Swedish word.
leverkusen
"Leverkusen" is not a Swedish word; it is the name of a German city.
Here 'Leverkusen' is used as a proper noun to identify a city.
Leverkusen är en stad i Tyskland.
Leverkusen is a city in Germany.
In this sentence, 'Leverkusen' refers to the football team that belongs to the city of Leverkusen.
Jag såg fotbollsmatchen mellan Bayern München och Leverkusen.
I watched the football match between Bayern Munich and Leverkusen.
Again, 'Leverkusen' is used as the name of the city where the action of staying happened.