Used when someone goes to bed because they're sick or very sad.

Illness or Depression

Doesn't always mean literally getting into bed, can express wanting to avoid reality.

Not Literal

Indicates a short period of rest or isolation, not necessarily a severe condition.

Refers to staying in bed for a prolonged period due to serious health issues or life stages.

Specifically used for old age rest or women resting before and after giving birth.

Implies a lack of choice due to the circumstances, rather than a voluntary action.