Question

what is inhalation and exhalation

Answer 1

The taking of air rich in oxygen inside the body is called inhalation.
The taking out of Air rich in carbon dioxide outside the body is called exhalation.

Answer 2

Inhalation is the process of taking in air in our body through the nostrils and obtain oxygen in it
While exhalation is completely different from it where the carbon dioxide rich air is thrown out of our body through our nostrils
Even after being completely different they are equally important and part of respiration