This is the 255th most frequent Finnish word.
niinistö
"Niinistö" is a Finnish surname and does not have a standalone meaning in English.
Here 'Niinistö' is used as a proper noun, referring to Sauli Niinistö, the President of Finland.
Niinistö on Suomen presidentti.
Niinistö is the President of Finland.
Here 'niinistöstä' (ablative form of 'Niinistö') indicates the subject of the discussion, illustrating how Finnish cases modify proper nouns for contextual meaning.
Keskustelimme niinistöstä ja hänen urastaan politiikassa.
We discussed Niinistö and his career in politics.
In this sentence, 'Niinistö' refers to the person and indicates the possessor of the assessment, showcasing its use in a genitive construct.