This is experienced before a loss actually occurs, such as when a loved one has a terminal illness and the person begins to process the impending loss. 

This is a natural, though painful, reaction to loss that typically involves a gradual process of adapting and moving toward acceptance, even while experiencing intense emotions and difficulties with daily activities. 

Also known as prolonged or persistent grief, this is a more intense and long-lasting form of grief that significantly interferes with daily functioning and may require professional help. 

This occurs when a person's grief is not socially acknowledged or supported, such as the loss of a pet, a relationship that isn't recognized as significant, or a loss experienced by a person with no social support system. 

This is the shared sorrow experienced by a large group of people in response to a significant event, such as a natural disaster, a national tragedy, or a community crisis. 

This type of grief arises from a sudden, violent, or unexpected death. 

In these forms of grief, there is a noticeable gap between the loss and the emotional response, with feelings surfacing much later than expected or not at all initially. 

Grief manifests in an unusual or exaggerated way, often including intense reactions like anger, lashing out, or physical symptoms that interfere with normal life. 

This involves experiencing multiple losses in a relatively short period, making the grief process more complex as one loss is piled on top of others.