| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | going to opera | Europe | Attending the opera is seen as a highbrow cultural activity, often associated with the elite and cultural aficionados. | 1 |
| 2 | opera glasses | Europe | Commonly used for viewing performances in opera houses and theaters. | 1 |
| 3 | opera glasses | Western Europe | Commonly used at classical music performances and operas for a better view of the stage | 1 |
| 4 | opera superstitions | Eastern European countries | Opera performers in some Eastern European countries believe that it's bad luck to wish 'good luck' to each other before a performance | 1 |
| 5 | opera ticket | Europe | Formal attire is expected when attending an opera, and tickets are often expensive. | 1 |