This is the 8005th most frequent Korean word.
auto
In Korean, "auto" (오토) refers to "automatic," often used for automatic transmission in cars.
Here, '자동차' is used to refer to a 'car', which is an automobile, showcasing the usage of '자동' (auto) in conjunction with '차' (vehicle).
자동차는 매우 빠릅니다.
The car is very fast.
In this case, '자동으로' means 'automatically', deriving from '자동' (auto) to indicate a self-functioning process.
이 기계는 자동으로 작동합니다.
This machine operates automatically.
Here, '자동' indicates that the 'response system' operates automatically without manual interventions.