This is the 6091st most frequent Catalan word.
liceo
"Opera house" or "lyceum."
Here, 'Liceu' is used as a proper noun, referring to the Gran Teatre del Liceu, an opera house in Barcelona.
El Liceu de Barcelona és un famós teatre d'òpera.
The Liceu of Barcelona is a famous opera theater.
In this sentence, 'liceu' refers to a secondary school or institution for specific education.
Quan era estudiant, vaig assistir a classes de música al liceu.
When I was a student, I attended music classes at the lyceum.
Here, 'liceu' signifies a high school or college where students participate in educational activities.