buccaneer vs sea king

buccaneer and sea king both are nouns.

Word	Noun	Adjective	Verb	Adverb
buccaneer	Yes	No	Yes	No
sea king	Yes	No	No	No

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

buccaneer: someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation
sea king: a Viking pirate chief

Other hyponyms of buccaneer include Barbary pirate, corsair.

buccaneer (noun)	sea king (noun)
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation	a Viking pirate chief

buccaneer (verb)	sea king (verb)
live like a buccaneer