priming vs igniter

priming and igniter both are nouns.

Word	Noun	Adjective	Verb	Adverb
priming	Yes	No	No	No
igniter	Yes	No	No	No

As nouns, igniter is a hypernym of priming; that is, igniter is a word with a broader meaning than priming:

Other hypernyms of priming include ignitor, light, lighter.

priming (noun)	igniter (noun)
the act of making something ready	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
the first or preliminary coat of paint or size applied to a surface