This is the 482nd most frequent Russian word.
новое
"Новое" - "new."
Here, "новое" is used as a neuter singular adjective in the role of a pronoun, standing for 'something new.'
Я узнал что-то новое.
I learned something new.
Here, "новое" is an adjective modifying the neuter singular noun 'платье' ('dress'), indicating it is 'new.'
Она купила новое платье.
She bought a new dress.
In this sentence, "новое" is an adjective describing the neuter singular noun 'дело' ('project'), specifying it as 'new.'