Hi,
in the current WaniKani vocabulary there are two words for “red light district”. On level 47 there is 花柳 (かりゅう), and a different version 花柳界 (かりゅうかい) can be found on level 49.
In a recent article about the history of Osaka, I noticed a third word 遊郭 (ゆうかく) basically meaning the same. The word is a combination of 遊 (ゆう) from level 30 and 郭 (かく) from level 55.
best,
Jari
—
