1. 离开
If you go away, you leave a place or a person's company.
2. 外出（尤指度假）
If you go away, you leave a place and spend a period of time somewhere else, especially as a holiday.
1. get lost, as without warning or explanation
e.g. He disappeared without a trace
2. move away from a place into another direction
e.g. Go away before I start to cry
The train departs at noon
3. go away from a place
e.g. At what time does your train leave?
She didn't leave until midnight
The ship leaves at midnight
4. become invisible or unnoticeable
e.g. The effect vanished when day broke