Nagaoka-kyō (historical capital of Japan, 784–794)
Historical term referring to the short-lived capital established by Emperor Kanmu before the move to Heian-kyō (Kyoto).
Nagaoka-kyō was the capital of Japan from 784 to 794.
Nagaokakyō (city in Kyoto Prefecture)
Only with reading ながおかきょう
Modern city name; the reading is ながおかきょう. The historical capital reading ながおかのみやこ is not used for the city.
Nagaokakyō City is located in the southern part of Kyoto Prefecture.