This is the 2727th most frequent Russian word.
дагестан
Dagestan: A republic in southern Russia, located in the North Caucasus region.
The word 'Дагестан' is used here as a proper noun referring to a geographical location.
Дагестан — это живописный регион России.
Dagestan is a picturesque region of Russia.
In this sentence, 'Дагестан' functions as the direct object of the verb 'посетить' (to visit), indicating the place the speaker wants to go to.
Я хочу посетить Дагестан и увидеть его горы.
I want to visit Dagestan and see its mountains.
Here, 'Дагестана' is in the genitive case, showing possession and used as part of a possessive construction referring to the traditions of Dagestan.