Translation guide
A device or object used to hold a door open or prevent it from slamming shut.
ドアストッパー
door stopper (general)
A portable wedge or heavy object placed against a door to keep it from closing.
The most common and direct translation, a loanword from English. Used for both wedges and heavier decorative stoppers.
ドアストッパーを買ってきて。
Go buy a door stopper.
A general term for a door stop or buffer, often referring to a fixed floor or wall-mounted stopper that prevents the door from hitting the wall.
戸当たりが壊れたので、新しいのを付けないと。
The door stopper broke, so I need to install a new one.
Specifically a wedge-shaped door stopper, often made of rubber or wood. Less common than ドアストッパー.
ドアウェッジをドアの下に差し込んでください。
Please insert the door wedge under the door.
A device attached to the wall or floor that stops the door from hitting the wall or making noise.
Commonly used for fixed door stops, including magnetic or rubber types.
壁に戸当たりを付けて、ドアが壁に当たらないようにした。
I attached a door stopper to the wall so the door doesn't hit it.
A heavy, often decorative object placed on the floor to hold a door open.
Covers both functional and decorative heavy stoppers.
猫の形をしたドアストッパーをもらった。
I got a cat-shaped door stopper.
Literally 'weight', can be used to describe any heavy object used to hold a door open, but not a specific term for door stopper.
ドアストッパー is a broad loanword covering most types of door stoppers, including wedges and decorative weights. 戸当たり typically refers to fixed, often small, devices attached to walls or floors to prevent doors from hitting them. In many contexts they overlap, but 戸当たり is less likely for a portable wedge.
Also used for fixed types, though it can be ambiguous.
床にドアストッパーが付いている。
There's a door stopper on the floor.
I put a weight to keep the door from closing.