ELEVATION ---> means it is the height to which something is elevated or to which it rises.

---> it can also mean the vertical distance either between the top and bottom of something or between a base and something above it.

---> can also mean the height above or below a fixed reference point.

While TEMPERATURE ---> means the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.