noun, noun which may take the genitive case particle 'no'
Refers to the back surface or rear side of an object, often in contrast to the front. Common in technical descriptions, product specs, and spatial references.
There is a parking lot at the rear of the building.
There is a power switch on the back of this machine.
Please sign on the reverse side of the document.
Connect the cable to the back of the computer.
I was attacked from behind by the enemy.
後部 refers to the rear section or part of something (like the back seats of a car), whereas 背面 refers specifically to the back surface or side.
背面 describes the back of something facing away, like a building or a person's back, whereas 裏面 focuses on the reverse side of a flat surface such as paper.
背面 is a more technical, formal term for the back surface of an object, while 裏側 is the everyday word and also covers figurative 'hidden' meanings.
表面 means the visible outer surface (often the front or top) of something, while 背面 specifically means the back or rear surface.
側面 refers to the side surface of an object, while 背面 refers to its back surface, so the two describe different faces.
背面 refers to the outward-facing back of something (like a person's back or a chair's back), while 裏面 refers to the reverse side that faces away when the object is flipped, such as a card or coin.
Compound of 背 (hai, 'back') and 面 (men, 'surface, face'). The reading is on'yomi. The word has been used in Japanese to denote the rear side of objects since at least the early modern period.