different between ionosphere vs geospace

English

iono- +? -sphere

ionosphere (plural ionospheres)

The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
The similar region of the atmosphere of another planet.

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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