Russian vs Samoyed

Russian and Samoyed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Russian	Yes	Yes	No	No
Samoyed	Yes	No	No	No

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

Russian (noun)	Samoyed (noun)
the Slavic language that is the official language of Russia	Siberian breed of white or cream-colored dog of the spitz family
a native or inhabitant of Russia	the Uralic languages spoken by the Samoyed in northwestern Siberia
	a Samoyedic-speaking person in northwestern Siberia

Russian (adjective)	Samoyed (adjective)
of or pertaining to or characteristic of Russia or its people or culture or language