This is the 439th most frequent Polish word.
polski
"Polski" means "Polish" in English.
Here, 'polski' is used as an adjective to describe the noun 'język' (language), referring to the specific language associated with Poland.
Lubię polski język.
I like the Polish language.
In this sentence, 'po polsku' is a common phrase that means 'in Polish,' indicating the language in which the program is prepared or presented.
Ten program jest zrobiony po polsku.
This program is made in Polish.
Here, 'Polski' is a noun referring to the subject of studying the Polish language, and it appears as the subject of the sentence.