This is the 5561st most frequent Russian word.
популярные
"Popular."
In this sentence, the word 'популярные' is used as an adjective to describe the noun 'книги' (books), indicating that they are very well-liked or widely read at the present time.
Эти книги сейчас очень популярные.
These books are very popular right now.
Here, 'популярные' modifies 'песни' (songs), meaning that the songs are currently trendy or favored by many people and thus frequently broadcasted.
Популярные песни часто играют по радио.
Popular songs are often played on the radio.
In this phrase, 'популярные' is used as a predicate adjective and describes the sports mentioned, emphasizing their widespread practice or appreciation among the group being discussed.