scud vs plunge

scud and plunge both are nouns.

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

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

scud (noun)	plunge (noun)
the act of moving along swiftly (as before a gale)	a brief swim in water
	a steep and rapid fall

scud (verb)	plunge (verb)
run or move very quickly or hastily	begin with vigor
run before a gale	devote (oneself) fully to
	cause to be immersed
	immerse briefly into a liquid so as to wet, coat, or saturate
	thrust or throw into
	fall abruptly
	drop steeply
	dash violently or with great speed or impetuosity