Shichidengosha refers to the palace buildings located behind Shishinden (The Throne Hall) and Jijuden (literally, hall of benevolence and longevity) in the dairi (inner palace grounds) of the Heian Palace, which were mainly used as the residence of the empresses of the emperors.
七殿五舎（しちでんごしゃ）とは、平安京内裏の紫宸殿や仁寿殿の後方に位置し、主に天皇の后妃の住まう殿舎を指す。