asphyxiator vs fire extinguisher

asphyxiator and fire extinguisher both are nouns.

Word	Noun	Adjective	Verb	Adverb
asphyxiator	Yes	No	No	No
fire extinguisher	Yes	No	No	No

As nouns, asphyxiator and fire extinguisher are synonyms defined as:

asphyxiator and fire extinguisher: a manually operated device for extinguishing small fires

Other synonyms of asphyxiator include extinguisher.

asphyxiator (noun)	fire extinguisher (noun)
a manually operated device for extinguishing small fires	a manually operated device for extinguishing small fires