居室|きょしつkyoshitsu[0]heiban (flat)

1. nounliving room

• Synonym居間いまNeutralThe everyday word for the room where the family spends time; 「居室」 sounds legal or technical, meaning a room continuously used for living, work and the like.
• SynonymリビングルームNeutralLoanword for the living room, common in housing advertisements; suggests a Western-style room.
• SynonymシッティングルームNeutralLoanword for a room in a hotel or mansion where guests sit and relax; used less often.
• SynonymリヴィングルームNeutralAn alternative spelling of the loanword, with the same meaning as 「リビングルーム」; used less often.
• Related茶の間ちゃのまNeutralThe room in a Japanese-style home where the family gathers to eat; has a warm, homey feel, and can also stand for an ordinary household.
• Related御茶の間NeutralA politer way of saying 「茶の間」; often seen in 「お茶の間の皆さん」, addressing TV viewers.

In building regulations, 「居室」 means a room continuously used for living, work or similar purposes; it can also just mean the room you usually stay in. For the everyday living room, say 「居間」 or 「リビング」; for the Japanese-style family room, 「茶の間」.

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

1. 住宅じゅうたくで普段ふだんいる部屋へや。
2. 居住きょじゅう、執務しつむ、作業さぎょう、集会しゅうかい、娯楽ごらくその他たこれらに類るいする目的もくてきのために継続的けいぞくてきに使用しようする室むろのこと（建築基準法けんちくきじゅんほう第だい2条じょう第だい4号ごう）。日本にっぽんでは、採光さいこう、換気かんき、地階ちかいへの設置せっちなどに法令ほうれい上じょうの規制きせいがある（同法どうほう第だい28条じょう、第だい29条じょうほか）。