Salvelinus namaycush vs lake trout

Salvelinus namaycush and lake trout both are nouns.

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

As nouns, Salvelinus namaycush and lake trout are synonyms defined as:

Salvelinus namaycush and lake trout: large fork-tailed trout of lakes of Canada and the northern United States

Other synonyms of Salvelinus namaycush include salmon trout.

Salvelinus namaycush (noun)	lake trout (noun)
large fork-tailed trout of lakes of Canada and the northern United States	large fork-tailed trout of lakes of Canada and the northern United States
	flesh of large trout of northern lakes