salmon vs smoked salmon

salmon and smoked salmon both are nouns.

Word	Noun	Adjective	Verb	Adverb
salmon	Yes	Yes	No	No
smoked salmon	Yes	No	No	No

As nouns, smoked salmon is a hyponym of salmon; that is, smoked salmon is a word with a more specific, narrower meaning than salmon:

salmon: flesh of any of various marine or freshwater fish of the family Salmonidae
smoked salmon: salmon cured by smoking

salmon (noun)	smoked salmon (noun)
any of various large food and game fishes of northern waters; usually migrate from salt to fresh water to spawn	salmon cured by smoking
a pale pinkish orange color
flesh of any of various marine or freshwater fish of the family Salmonidae

salmon (adjective)	smoked salmon (adjective)
of orange tinged with pink