Explain the difference between bereavement, grief, and mourning

What will be an ideal response?

Bereavement is the experience of losing a loved one by death. The root of this word means "to be robbed," suggesting unjust and injurious theft of something valuable. Consistent with this image, we respond to loss with grief—intense physical and psychological distress. When we say someone is grief-stricken, we imply that his or her total way of being is affected. Because grief can be overwhelming, cultures have devised ways of helping their members move beyond it to deal with the life changes demanded by death of a loved one. Mourning is the culturally specified expression of the bereaved person's thoughts and feelings. Customs—such as gathering with family and friends, dressing in black, attending the funeral, and observing a prescribed mourning period with special rituals—vary greatly among societies and ethnic groups. But all have in common the goal of helping people work through their grief and learn to live in a world that does not include the deceased.