This is the 3676th most frequent Catalan word.
tunísia
Tunísia: Tunisia (a country in North Africa).
Here, 'Tunísia' is used as a proper noun referring to the country located in North Africa.
Vaig visitar Tunísia l'estiu passat.
I visited Tunisia last summer.
Here, 'Tunísia' is used as a proper noun within a possessive construction to describe the origin of the music.
El meu amic és un expert en la música de Tunísia.
My friend is an expert in the music of Tunisia.
Here, 'Tunísia' is used as the subject of the sentence, again referencing the country but in a general informative statement.