This is the 1932nd most frequent Portuguese word.
jovem
Young person.
Here, 'jovem' is used as a noun to refer specifically to a young male individual.
O jovem está estudando na biblioteca.
The young man is studying in the library.
In this sentence, 'jovem' is used as an adjective to describe the design as youthful.
A casa foi construída com um design jovem e moderno.
The house was built with a youthful and modern design.
Here, 'jovens' is used as a plural noun to refer to young individuals in general.