royal family; royal house
Refers to the family of a monarch, or the institution itself. Common in news and formal contexts.
イギリス王室のニュースは世界中で注目される。
News about the British royal family attracts attention around the world.
王室の伝統は何世紀も続いている。
The traditions of the royal house have continued for centuries.
She married into a European royal family.
That country still upholds its royal traditions today.
After the revolution, the monarchy was abolished.
Many tourists gathered for the royal ceremony.