resuscitator vs ventilator

resuscitator and ventilator both are nouns.

Word	Noun	Adjective	Verb	Adverb
resuscitator	Yes	No	No	No
ventilator	Yes	No	No	No

As nouns, ventilator is a hypernym of resuscitator; that is, ventilator is a word with a broader meaning than resuscitator:

resuscitator: a breathing apparatus used for resuscitation by forcing oxygen into the lungs of a person who has undergone asphyxia or arrest of respiration
ventilator: a device that facilitates breathing in cases of respiratory failure

Other hypernyms of resuscitator include breathing apparatus, breathing device, breathing machine.

resuscitator (noun)	ventilator (noun)
a breathing apparatus used for resuscitation by forcing oxygen into the lungs of a person who has undergone asphyxia or arrest of respiration	a device (such as a fan) that introduces fresh air or expels foul air
	a device that facilitates breathing in cases of respiratory failure