ignitor vs fuse

ignitor and fuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
ignitor	Yes	No	No	No
fuse	Yes	No	Yes	No

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

ignitor (noun)	fuse (noun)
a device for lighting or igniting fuel or charges or fires	any igniter that is used to initiate the burning of a propellant
a substance used to ignite or kindle a fire	an electrical device that can interrupt the flow of electrical current when it is overloaded

ignitor (verb)	fuse (verb)
	mix together different elements
	make liquid or plastic by heating
	become plastic or fluid or liquefied from heat
	equip with a fuse; provide with a fuse