Difference between systolic and diastolic blood pressure is that

Systolic pressure has to do directly with your heart beats and level of pumping blood while the Diastolic Pressure concerns with the pressure in the arteries.

The difference in their numeric value is your pulse level

Explanation:

Difference between systolic and diastolic blood pressure is that:

systolic pressure is the highest possible, maximum pressure that is exerted by your heart while pumping blood. It is usually the Top number in the heart pressure readings.

The Diastolic Pressure is the pressure not directly in your heart, but in the blood vessels like the arteries. Usually, they are the bottom number in the readings.

Now, the difference in the reading of both the Systolic and Diastolic Pressure bis called the pulse level.

The numeric difference is what medical expert use ti determine the level of your pulse rate