plunge vs dunk

plunge and dunk both are nouns.

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

As verbs, plunge and dunk are synonyms defined as:

plunge and dunk: immerse briefly into a liquid so as to wet, coat, or saturate

Other synonyms of plunge include dip, douse, souse.

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

Other hyponyms of plunge include dip, dip, douse, plunge, souse, dip, dip, submerge, submerse, soak, sheathe.

plunge (noun)	dunk (noun)
a brief swim in water	a basketball shot in which the basketball is propelled downward into the basket
a steep and rapid fall

plunge (verb)	dunk (verb)
begin with vigor	dip into a liquid while eating
devote (oneself) fully to	immerse briefly into a liquid so as to wet, coat, or saturate
cause to be immersed	make a dunk shot, in basketball
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