igniter vs spunk

igniter and spunk both are nouns.

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

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

Other hyponyms of igniter include firelighter, kindling, punk, tinder, touchwood, punk.

igniter (noun)	spunk (noun)
a device for lighting or igniting fuel or charges or fires	the courage to carry on
a substance used to ignite or kindle a fire	material for starting a fire