wreckfish vs sea bass

wreckfish and sea bass both are nouns.

Word	Noun	Adjective	Verb	Adverb
wreckfish	Yes	No	No	No
sea bass	Yes	No	No	No

As nouns, sea bass is a hypernym of wreckfish; that is, sea bass is a word with a broader meaning than wreckfish:

wreckfish: brown fish of the Atlantic and Mediterranean found around rocks and shipwrecks
sea bass: any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin

wreckfish (noun)	sea bass (noun)
brown fish of the Atlantic and Mediterranean found around rocks and shipwrecks	any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin
	the lean flesh of a saltwater fish of the family Serranidae