speeding vs scud

speeding and scud both are nouns.

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

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

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

speeding (noun)	scud (noun)
changing location rapidly	the act of moving along swiftly (as before a gale)

speeding (verb)	scud (verb)
	run or move very quickly or hastily
	run before a gale