This is the 14123rd most frequent Russian word.
опера
Opera.
Here, 'опера' refers to a musical genre or a specific performance of an opera.
Я люблю посещать оперы в театре.
I love attending operas in the theater.
In this sentence, 'опера' signifies a specific work of opera music.
Эта опера была написана знаменитым композитором.
This opera was written by a famous composer.
Here, 'опера' denotes the online streaming or viewing of an opera performance.