What is Elevation?
Elevation is the measurement of the height of a geographical feature that is above mean sea level (MSL). This means that elevation is the distance from the height that represents the surface of the ocean up to the top of the feature.
Elevation uses a fixed reference point, mean sea level, from which these features are measured. Elevation measures the height of things that are on the ground.
What is Altitude?
In geography, altitude is the height of an object above the surface of the ground or sea level based on a datum, a geodetic reference point. Altitude is the vertical measurement of the distance of an object above the surface of the Earth.
For example. the height of a plane in the sky is known as that machine’s altitude.