ventilation system vs ventilating system

ventilation system and ventilating system both are nouns.

Word	Noun	Adjective	Verb	Adverb
ventilation system	Yes	No	No	No
ventilating system	Yes	No	No	No

As nouns, ventilation system and ventilating system are synonyms defined as:

ventilation system and ventilating system: a mechanical system in a building that provides fresh air

Other synonyms of ventilation system include ventilation.

ventilation system (noun)	ventilating system (noun)
a mechanical system in a building that provides fresh air	a mechanical system in a building that provides fresh air