This is the 9614th most frequent Russian word.
хорватский
Croatian.
Here, "хорватский" functions as an adjective describing "язык" (language), indicating the specific language being taught.
Мы учим хорватский язык.
We study the Croatian language.
In this sentence, the word "хорватскую" is the feminine singular form of the adjective "хорватский," modifying the noun "кухню" (cuisine).
Я люблю хорватскую кухню.
I love Croatian cuisine.
Here, "хорватская" acts as an adjective describing "певица" (singer), showing origin or nationality.