go on vs spark

go on is not a noun while spark is a noun.

Word	Noun	Adjective	Verb	Adverb
go on	No	No	Yes	No
spark	Yes	No	Yes	No

go on (noun)	spark (noun)
	merriment expressed by a brightness or gleam or animation of countenance
	a momentary flash of light
	a small fragment of a burning substance thrown out by burning material or by friction
	electrical conduction through a gas in an applied electric field
	a small but noticeable trace of some quality that might become stronger

go on (verb)	spark (verb)
come to pass	put in motion or move to act
continue talking	emit or produce sparks
start running, functioning, or operating
move forward, also in the metaphorical sense
continue a certain state, condition, or activity