Go away and Go to bed

Go away verb - Move away from a place into another direction.

Go to bed and go away are semantically related in retire topic. In some cases you can use "Go to bed" instead a verb "Go away", when it comes to topics like leave a place or responsibility.

Go to bed verb - Prepare for sleep.

Go away and go to bed are semantically related in retire topic. Sometimes you can use "Go away" instead a verb phrase "Go to bed", if it concerns topics such as leave a place or responsibility.