lighter vs tinder

lighter and tinder both are nouns.

Word	Noun	Adjective	Verb	Adverb
lighter	Yes	No	Yes	No
tinder	Yes	No	No	No

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

Other hyponyms of lighter include firelighter, kindling, punk, spunk, touchwood, punk.

lighter (noun)	tinder (noun)
a device for lighting or igniting fuel or charges or fires	material for starting a fire
a flatbottom boat for carrying heavy loads (especially on canals)
a substance used to ignite or kindle a fire

lighter (verb)	tinder (verb)
transport in a flatbottom boat