sputnik vs artificial satellite

sputnik and artificial satellite both are nouns.

Word	Noun	Adjective	Verb	Adverb
sputnik	Yes	No	No	No
artificial satellite	Yes	No	No	No

As nouns, artificial satellite is a hypernym of sputnik; that is, artificial satellite is a word with a broader meaning than sputnik:

sputnik: a Russian artificial satellite
artificial satellite: man-made equipment that orbits around the earth or the moon

Other hypernyms of sputnik include orbiter, satellite.

sputnik (noun)	artificial satellite (noun)
a Russian artificial satellite	man-made equipment that orbits around the earth or the moon