Question: Are La traviata and Khovanshchina both operas ?
Sentence (from "Khovanshchina"): Khovanshchina (Russian: Хованщина , "Hovánščina", sometimes rendered The Khovansky Affair; since the ending -ščina is pejorative) is an opera (subtitled a 'national music drama') in five acts by Modest Mussorgsky.
Relevant evidence: Yes