ventilatory vs ventilation

ventilatory is not a noun while ventilation is a noun.

Word	Noun	Adjective	Verb	Adverb
ventilatory	No	Yes	No	No
ventilation	Yes	No	No	No

ventilatory (noun)	ventilation (noun)
	the act of supplying fresh air and getting rid of foul air
	the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
	a mechanical system in a building that provides fresh air
	free and open discussion of (or debate on) some question of public interest

ventilatory (adjective)	ventilation (adjective)
provided with ventilation or involving pulmonary ventilation