Translation guide
A booster seat is a seat that raises a child so they can safely use an adult seat belt or sit at a table. In Japanese, the term depends on the context: car booster seats are called チャイルドシート (child seat) or specifically ブースターシート, while dining booster seats are often called 座席用クッション or ジュニアシート.
dining booster seat
Common term for booster cushions.
A seat used in a car to raise a child so the seat belt fits properly.
The general term for child car seats, including booster seats. Often used broadly for all types of child restraint systems.
Since my child is small, I use a child seat.
A loanword specifically for booster seats. Commonly understood, especially among parents.
A booster seat is required until the child reaches 140 cm in height.
Often used for booster seats for older children who have outgrown a full child seat. Sometimes used interchangeably with ブースターシート.
When seated in a junior seat, the seat belt can be worn correctly.
A seat used at a dining table to raise a child to table height.
Literally 'seat cushion', this is a common term for booster cushions used on chairs.
I borrowed a booster cushion at the restaurant.
Can also refer to dining booster seats, especially those with a backrest and tray.
Typically refers to high chairs, but sometimes used loosely for any child seating, including booster seats.
The literal translation 'ブースターシート' is understood but less common than チャイルドシート for car seats. For dining, '座席用クッション' is clearer than ブースターシート.
At home, we use a booster seat to eat together.
このベビーチェアはテーブルに取り付けられます。
This baby chair can be attached to the table.