This is the 2138th most frequent Swedish word.
islamiska
Islamic
Here, 'islamiska' is used as an adjective describing the noun 'tron' (faith), indicating that the faith belongs to or is associated with the Islamic tradition.
Den islamiska tron är en av världens största religioner.
The Islamic faith is one of the world's largest religions.
In this sentence, 'islamiska' modifies the plural noun 'kulturer' (cultures), characterizing them as belonging to or influenced by Islamic customs and practices.
Islamiska kulturer har bidragit stort till världens historia.
Islamic cultures have greatly contributed to the history of the world.
'Islamiska' here is again an adjective, qualifying the noun 'böcker' (books), suggesting that the content or interpretation of these books is related to Islam.