plunderer vs buccaneer

plunderer and buccaneer both are nouns.

Word	Noun	Adjective	Verb	Adverb
plunderer	Yes	No	No	No
buccaneer	Yes	No	Yes	No

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

plunderer: someone who takes spoils or plunder (as in war)
buccaneer: someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation

Other hyponyms of plunderer include pirate, sea robber, sea rover.

plunderer (noun)	buccaneer (noun)
someone who takes spoils or plunder (as in war)	someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation

plunderer (verb)	buccaneer (verb)
	live like a buccaneer