This is the 408th most frequent Hungarian word.
énekesnő
Female singer.
The word 'énekesnő' is used here as a noun representing a female singer, the subject of the sentence.
Az énekesnő egy csodálatos dalt adott elő.
The singer performed a wonderful song.
In this sentence, 'énekesnő' is in the accusative case ('énekesnőt'), showing that she is the direct object of the verb 'ünnepelte' (celebrated).
A koncerten az énekesnőt sok rajongó ünnepelte.
During the concert, many fans celebrated the singer.
Here, 'énekesnő' is in the dative case ('énekesnőnek'), indicating possession or association with the noun 'hangja' (her voice).