speeding vs quickening

speeding and quickening both are nouns.

Word	Noun	Adjective	Verb	Adverb
speeding	Yes	No	No	No
quickening	Yes	No	No	No

As nouns, quickening is a hyponym of speeding; that is, quickening is a word with a more specific, narrower meaning than speeding:

Other hyponyms of speeding include acceleration, speedup, deceleration, scud, scudding.

speeding (noun)	quickening (noun)
changing location rapidly	the act of accelerating; increasing the speed
	the process of showing signs of life
	the stage of pregnancy at which the mother first feels the movements of the fetus