Panic attacks and panic disorder are related, but they're not the same thing.
A panic attack is a brief, sharp spike in discomfort or terror that lasts for several minutes. It can result in bodily symptoms such as sweating, dizziness, a racing heart, shortness of breath, and chest pain and may be brought on by stress, certain circumstances, or possibly nothing at all.
Panic attacks can occur in everyone, even those without a history of mental illness.
Panic disorder, on the other hand, is a mental health disorder marked by recurrent, unprovoked panic attacks. Many who suffer from panic disorder always worry about having another episode, which can result in avoiding situations (such as crowded locations and driving) where they have previously experienced panic attacks, worrying about their physical well-being all the time, and mistaking typical body aches and pains for indications of impending attacks. It can also cause significant impairment in day-to-day functioning as a result of avoidance and anxiety behaviors.
Psychotherapy, medications, or a combination of both are very effective in treating panic attacks and panic disorder.