hitting vs plunk

hitting and plunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
hitting	Yes	No	No	No
plunk	Yes	No	Yes	Yes

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

hitting (noun)	plunk (noun)
the act of contacting one thing with another	(baseball) hitting a baseball so that it drops suddenly
	a hollow twanging sound

hitting (verb)	plunk (verb)
	pull lightly but sharply with a plucking motion
	set (something or oneself) down with or as if with a noise
	drop steeply
	make or move along with a sound as of a horse's hooves striking the ground

hitting (adverb)	plunk (adverb)
	with a short hollow thud