The most important difference is that stroke affects the brain, whereas a heart attack affects the heart as already mentioned. A heart attack is caused by a blockage of blood vessels, usually the coronary arteries. There are two main ways however in which a stoke can occur. The first is ischemia, where the blood vessels are blocked, as with a heart attack. The other is hemorrhage, where blood leaks from the brain.
Heart attack = blood can't circulate in the hear due to a blockage.
Stroke = similar, but in the brain.
A heart attack is caused by a blockage of blood vessels, always the coronary arteries...
Heart Attack = Heart Muscle Dies
Stroke=Brian Cells Die