じょしゅ助手joshuすけて助手sukete
1.

A person who provides support or assistance in completing tasks, often working closely with someone whose job they are helping to facilitate.

2.

An academic staff member at a university or technical college who is responsible for supporting teaching and research activities, typically ranked below a professor or associate professor.

Example:

私は助手を探している。

じょしゅせき助手席joshuseki
1.

The seat located next to the driver's seat in a vehicle, typically occupied by a passenger.

2.

A designated space in an automobile intended for a person accompanying the driver, providing them with a view of the road and interaction with the driver.

3.

The area in a car adjacent to the driver’s position, where an individual can sit and assist or engage with the driver during travel.

Example:

助手席に置いていた鞄がない!