firing vs kindling

firing and kindling both are nouns.

Word	Noun	Adjective	Verb	Adverb
firing	Yes	No	No	No
kindling	Yes	No	No	No

As nouns, firing and kindling are synonyms defined as:

Other synonyms of firing include ignition, inflammation, lighting.

firing (noun)	kindling (noun)
the act of setting something on fire	the act of setting something on fire
the termination of someone's employment (leaving them free to depart)	material for starting a fire
the act of discharging a gun
the act of firing weapons or artillery at an enemy