This is the 978th most frequent Swedish word.
kalmar
"Kalmar" is a proper noun referring to a city in southeastern Sweden.
In this sentence, 'Kalmar' is used as a proper noun, referring to the name of a city.
Kalmar är en stad i Sverige.
Kalmar is a city in Sweden.
Here, 'Kalmar' serves as an attributive proper noun, describing the specific castle.
Vi köpte möbler från Kalmar slott.
We bought furniture from Kalmar castle.
In this case, 'Kalmar' is used again as a proper noun but refers to a person's name.