Final answer:
A transient ischemic attack (TIA) is a temporary disruption of blood flow to the brain, while a cerebrovascular accident (CVA) is a more severe condition that causes permanent damage to brain cells.
Step-by-step explanation:
A transient ischemic attack (TIA) is a temporary disruption of blood flow to the brain in which symptoms occur rapidly but only last a short time. It is also known as a mini-stroke. On the other hand, a cerebrovascular accident (CVA), commonly known as a stroke, is a more severe condition that results in permanent damage to brain cells due to blocked or broken arteries in the brain. Unlike a TIA, the effects of a stroke last at least 24 hours.