Question

Differences between mesosphere and barosphere

Answer 1

layer of the earth's atmosphere that is directly above the stratosphere and directly below the thermosphere .
barysphere
The part of an atmosphere below the exosphere

Answer 2

Barosphere is the part of the atmosphere, below the exosphere, whereas mesosphere is above the troposphere and below the thermosphere.

Barosphere constitutes troposphere, stratosphere, mesosphere and thermosphere, whereas mesosphere is just part of the larger Barosphere.