give off vs spark

give off is not a noun while spark is a noun.

Word	Noun	Adjective	Verb	Adverb
give off	No	No	Yes	No
spark	Yes	No	Yes	No

As verbs, spark is a hyponym of give off; that is, spark is a word with a more specific, narrower meaning than give off:

give off: give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
spark: emit or produce sparks

Other hyponyms of give off include effuse, reflect, shine, sparkle, radiate, scintillate, fume, smoke, reek, shoot, ray, steam.

give off (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

give off (verb)	spark (verb)
have as a by-product	put in motion or move to act
give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.	emit or produce sparks