breakdown vs misfire

breakdown and misfire both are nouns.

Word	Noun	Adjective	Verb	Adverb
breakdown	Yes	No	No	No
misfire	Yes	No	Yes	No

As nouns, misfire is a hyponym of breakdown; that is, misfire is a word with a more specific, narrower meaning than breakdown:

Other hyponyms of breakdown include brake failure, engine failure, dud, outage, power failure, power outage, fault.

breakdown (noun)	misfire (noun)
the act of disrupting an established order so it fails to continue	an explosion that fails to occur
an analysis into mutually exclusive categories	a failure to hit (or meet or find etc)
a cessation of normal operation
(biology) the process of decay caused by bacterial or fungal action
(chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance
a mental or physical breakdown

breakdown (verb)	misfire (verb)
	fail to fire or detonate