廊下|ろうかrouka[0]heiban (flat)

1. nouncorridor; hallway; passageway
   「学園がくえんの廊下ろうかで、濃厚のうこうなキスシーン・・・聞きいたぞ聞きいたぞ」「濃厚のうこうじゃなーい！話はなしに尾おひれ付ついてるって・・・」↗

   "A passionate kiss scene in a school corridor ... I've heard all about it!" "It wasn't passionate! That's an exaggeration..."

• Synonym回廊かいろうWrittenIn written prose, a covered walkway that encircles a building or connects buildings, typical of temples and palaces; it stresses the encircling or linking.
• Synonym歩廊ほろうFormalFormal, dated written term: a covered corridor with an earthen or brick floor; can also mean a station platform. Rare today.

For an ordinary indoor hallway, 「廊下」 is the default. Use 「回廊」 for the covered walks that circle or link buildings at temples and palaces; 「歩廊」 is a dated formal word for such corridors (or a platform), rarely seen today.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 建物たてものの内部ないぶ・外部がいぶに存在そんざいする通路つうろ。一般的いっぱんてきには、部屋へやを接続せつぞくするために存在そんざいする。