“What Are the differences?” Here is a good read: https://www.healthline.com/health/alzheimers-disease/difference-dementia-alzheimers
Dementia and Alzheimer’s disease aren’t the same. Dementia is a group of symptoms, that impact memory, performance of daily activities, and communication abilities. Alzheimer’s disease is a progressive disease of the brain. Alzheimer’s disease gets worse with time and affects memory, language, and thought.
The National Institutes of Health (NIH) estimate that more than 5 million people in the United States have Alzheimer’s disease. Although younger people can and do get Alzheimer’s, the symptoms generally begin after age 60.
NIH Alzheimer's Disease Fact Sheet: https://www.nia.nih.gov/health/alzheimers-disease-fact-sheet
Go to the above informative links to learn more…