This is the 3439th most frequent German word.
kasachstan
Kazakhstan.
In this sentence, 'Kasachstan' is used as a proper noun to refer to the country itself.
Kasachstan ist ein Land in Zentralasien.
Kazakhstan is a country in Central Asia.
'Kasachstan' is applied here to indicate origin, specifically where someone's background is from.
Ich habe Freunde, die aus Kasachstan stammen.
I have friends who are from Kazakhstan.
Here, 'Kasachstan' is used in possessive form to describe association (e.g., the culture belonging to Kazakhstan).