noun
Refers to the art or profession of designing indoor spaces, including furniture, color schemes, and layout.
彼女はインテリアデザインの仕事をしています。
She works in interior design.
この部屋のインテリアデザインはとてもモダンですね。
The interior design of this room is very modern, isn't it?
Variant with an interpunct; less common in running text but seen in titles or design contexts.
インテリア is a broader term for 'interior' or 'interior decoration', while インテリアデザイン specifically refers to the professional design aspect.
Loanword from English 'interior design'.