detached palace; imperial villa; royal villa
Refers to a secondary palace or villa used by an emperor or royal family, separate from the main palace. Also used as a suffix in names of such places.
The Shugakuin Imperial Villa in Kyoto is known for its beautiful gardens.
The emperor spent the summer at the detached palace.
The emperor built a detached palace in Kyoto.
This building is used as a detached palace of the imperial family.
宮殿 is a general word for any palace, whereas 離宮 specifically denotes a detached or secondary imperial/royal residence.
王宮 typically means the main royal palace where a monarch resides, while 離宮 is a separate villa used away from the main court.
離宮 refers to a detached, often larger and more formal imperial palace, while 御用邸 is a smaller imperial villa used for vacations or retreats.
Compound of 離 (ri, 'separate, detached') and 宮 (kyū, 'palace, shrine'). The term has been used historically to refer to secondary residences of the imperial family.