This is the 4707th most frequent French word.
polonais
"Polonais" means "Polish" in English.
The word 'polonais' is used here as a noun referring to the Polish language.
J'étudie le polonais à l'université.
I study Polish at the university.
The word 'polonais' is used here as an adjective modifying the noun 'livre' to indicate the book's origin or language.
Ce livre polonais est très intéressant.
This Polish book is very interesting.
The word 'Polonais' is used here as a plural noun referring to the people of Poland.