Breath
Of activity.
The process of taking in and expelling air during breathing; "he took a deep breath and dived into the pool"; "he was fighting to his last breath".
This concept's ID is @1~4338
Ventilation
- exhalation
The act of expelling air from the lungs.
- inhalation
The act of inhaling; the drawing in of air (or other gases) as in breathing.