This is the 969th most frequent Finnish word.
nuorten
"Nuorten" means "of the youth" or "of young people" in English.
Here, 'nuorten' is in the genitive plural form, indicating possession, translating to 'of young people'.
Nuorten harrastukset ovat tärkeitä heidän kehitykselleen.
The hobbies of young people are important for their development.
In this sentence, 'nuorten' modifies 'kiinnostusten', signifying that the interests belong to the young people.
Kirjakerho on suunnattu erityisesti nuorten kiinnostusten mukaan.
The book club is especially tailored to the interests of young people.
Here, 'nuorten' again shows possession or a defining relationship, indicating that the participation is by young people.