improvement the act of improving something; "their improvements increased the value of the property"
ventilation -
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
hyperventilation an increased depth and rate of breathing greater than demanded by the body needs; can cause dizziness and tingling of the fingers and toes and chest pain if continued
discussion,
give-and-take,
word an extended communication (often interactive) dealing with some particular topic; "the book contains an excellent discussion of modal logic"; "his treatment of the race question is badly biased"
ventilation The process of supplying or removing air, by natural or mechanical means, to or from any space; such air may or may not have been conditioned.