Agonus cataphractus vs poacher

Agonus cataphractus and poacher both are nouns.

Word	Noun	Adjective	Verb	Adverb
Agonus cataphractus	Yes	No	No	No
poacher	Yes	No	No	No

As nouns, poacher is a hypernym of Agonus cataphractus; that is, poacher is a word with a broader meaning than Agonus cataphractus:

Agonus cataphractus: northern Atlantic sea poacher
poacher: small slender fish (to 8 inches) with body covered by bony plates; chiefly of deeper northern Pacific waters

Other hypernyms of Agonus cataphractus include sea poacher, sea poker.

Agonus cataphractus (noun)	poacher (noun)
northern Atlantic sea poacher	small slender fish (to 8 inches) with body covered by bony plates; chiefly of deeper northern Pacific waters
	a cooking vessel designed to poach food (such as fish or eggs)
	someone who hunts or fishes illegally on the property of another