freebooter vs buccaneer

freebooter and buccaneer both are nouns.

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

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

freebooter: 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 freebooter include pirate, sea robber, sea rover.

freebooter (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

freebooter (verb)	buccaneer (verb)
	live like a buccaneer