pore vs plunge

pore and plunge both are nouns.

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

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

Other hyponyms of pore include absorb, engross, engulf, immerse, soak up, steep, recall, think, zoom in, hear, listen, take heed.

pore (noun)	plunge (noun)
any small opening in the skin or outer surface of an animal	a brief swim in water
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass	a steep and rapid fall
any tiny hole admitting passage of a liquid (fluid or gas)

pore (verb)	plunge (verb)
direct one's attention on something	begin with vigor
	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