parietal gyrus vs gyrus

parietal gyrus and gyrus both are nouns.

Word	Noun	Adjective	Verb	Adverb
parietal gyrus	Yes	No	No	No
gyrus	Yes	No	No	No

As nouns, gyrus is a hypernym of parietal gyrus; that is, gyrus is a word with a broader meaning than parietal gyrus:

parietal gyrus: any of the convolutions of the outer surface of the parietal lobe of the cerebrum
gyrus: a convex fold or elevation in the surface of the brain

Other hypernyms of parietal gyrus include convolution.

parietal gyrus (noun)	gyrus (noun)
any of the convolutions of the outer surface of the parietal lobe of the cerebrum	a convex fold or elevation in the surface of the brain