Salvelinus namaycush vs trout

Salvelinus namaycush and trout both are nouns.

Word	Noun	Adjective	Verb	Adverb
Salvelinus namaycush	Yes	No	No	No
trout	Yes	No	No	No

As nouns, trout is a hypernym of Salvelinus namaycush; that is, trout is a word with a broader meaning than Salvelinus namaycush:

Salvelinus namaycush: large fork-tailed trout of lakes of Canada and the northern United States
trout: any of various game and food fishes of cool fresh waters mostly smaller than typical salmons

Salvelinus namaycush (noun)	trout (noun)
large fork-tailed trout of lakes of Canada and the northern United States	any of various game and food fishes of cool fresh waters mostly smaller than typical salmons
	flesh of any of several primarily freshwater game and food fishes