inhalator vs breathing machine

inhalator and breathing machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
inhalator	Yes	No	No	No
breathing machine	Yes	No	No	No

As nouns, breathing machine is a hypernym of inhalator; that is, breathing machine is a word with a broader meaning than inhalator:

inhalator: a breathing device for administering long-term artificial respiration
breathing machine: a device that facilitates breathing in cases of respiratory failure

Other hypernyms of inhalator include breathing apparatus, breathing device, ventilator.

inhalator (noun)	breathing machine (noun)
a dispenser that produces a chemical vapor to be inhaled in order to relieve nasal congestion	a device that facilitates breathing in cases of respiratory failure
a breathing device for administering long-term artificial respiration