Differences between acquired brain injury and traumatic brain injury?

A traumatic brain injury (TBI) is an injury to the brain caused by an external force after birth. Common causes of a traumatic brain injury include gunshot wounds, motor vehicle crashes, assaults, or falling and striking your head.
An acquired brain injury (ABI) includes all types of traumatic brain injuries and also brain injuries caused after birth by cerebral vascular accidents (commonly known as stroke), and loss of oxygen to the brain.
Injuries to the brain that are present at birth or progressive in nature, such as Alzheimers disease or Parkinson’s is not considered a traumatic or acquired brain injury.
The official definitions of these terms as adopted by the Brain Injury Association are below.
Traumatic Brain Injury
Traumatic brain injury is an insult to the brain, not of a degenerative or congenital nature but caused by an external physical force, that may produce a diminished or altered state of consciousness, which results in an impairment of cognitive abilities or physical functioning. It can also result in the disturbance of behavioral or emotional functioning. These impairments may be either temporary or permanent and cause partial or total functional disability or psychosocial maladjustment.
Acquired Brain Injury
An acquired brain injury is an injury to the brain, which is not hereditary, congenital, degenerative, or induced by birth trauma. An acquired brain injury is an injury to the brain that has occurred after birth.