This is the 738th most frequent Finnish word.
korkein
The Finnish word "korkein" means "the highest" in English.
The word 'korkein' here is used as a superlative adjective meaning 'highest', describing the peak in comparison to others.
Hän kiipesi vuoren korkeimmalle huipulle.
He climbed to the highest peak of the mountain.
Here, 'korkein' describes the building's physical height, making it the tallest among others in the city.
Tämä rakennus on kaupungin korkein.
This building is the tallest in the city.
Here, 'korkeimman' is the superlative form of 'korkea', meaning 'high', and it describes 'pisteen' (score), indicating the utmost degree or level among competitors.