different between mesosphere vs geospace

English

meso- +? -sphere

mesosphere (plural mesospheres)

(meteorology) The layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.
(geology) The part of the Earth's mantle below the asthenosphere and above the outer core.

geo- +? space

geospace (uncountable)

The region of outer space near Earth, including the upper atmosphere, ionosphere and magnetosphere.
The region of space that goes from the solar photosphere to the mesosphere of Earth. It includes the solar photosphere, chromosphere and corona, the solar wind, Earth's magnetosheath, magnetosphere, thermosphere, ionosphere and mesosphere.

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