inflammation vs ignition

inflammation and ignition both are nouns.

Word	Noun	Adjective	Verb	Adverb
inflammation	Yes	No	No	No
ignition	Yes	No	No	No

As nouns, inflammation and ignition are synonyms defined as:

Other synonyms of inflammation include firing, kindling, lighting.

inflammation (noun)	ignition (noun)
arousal to violent emotion	the act of setting something on fire
the act of setting something on fire	the mechanism that ignites the fuel in an internal-combustion engine
a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat	the process of initiating combustion or catching fire
the state of being emotionally aroused and worked up