Kiinnostus = interest (noun).
A noun that refers to the feeling of interest or curiosity someone has.
Minulla on kiinnostus historiaan. = I have an interest in history.
Mielenkiintoinen = interesting (adjective).
An adjective used to describe something that causes interest.
*Kuulostaa mielenkiintoiselta! = Sounds interesting!
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What do you think, is it correct?
Kiitos paljon