channel cat vs siluriform fish

channel cat and siluriform fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
channel cat	Yes	No	No	No
siluriform fish	Yes	No	No	No

As nouns, siluriform fish is a hypernym of channel cat; that is, siluriform fish is a word with a broader meaning than channel cat:

channel cat: freshwater food fish common throughout central United States
siluriform fish: any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth

Other hypernyms of channel cat include catfish.

channel cat (noun)	siluriform fish (noun)
freshwater food fish common throughout central United States	any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth