This is the 16885th most frequent Russian word.
современную
"Современную" means "modern" or "contemporary."
The word 'современную' as an adjective modifying 'книгу', showing its modern characteristics.
Я купил современную книгу по истории.
I bought a modern book on history.
The word 'современную' as an adjective modifying 'музыку', describing music from the current era.
Она предпочитает современную музыку.
She prefers modern music.
The word 'современную' as an adjective modifying 'методику', indicating contemporary or up-to-date teaching methods.