spark vs come about

spark is a noun but come about is not a noun.

Word	Noun	Adjective	Verb	Adverb
spark	Yes	No	Yes	No
come about	No	No	Yes	No

spark (noun)	come about (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

spark (verb)	come about (verb)
put in motion or move to act	come to pass
emit or produce sparks