neopallium vs cerebral cortex

neopallium and cerebral cortex both are nouns.

Word	Noun	Adjective	Verb	Adverb
neopallium	Yes	No	No	No
cerebral cortex	Yes	No	No	No

As nouns, cerebral cortex is a hypernym of neopallium; that is, cerebral cortex is a word with a broader meaning than neopallium:

neopallium: the cortical part of the neencephalon
cerebral cortex: the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum

Other hypernyms of neopallium include cerebral mantle, cortex, pallium.

neopallium (noun)	cerebral cortex (noun)
the cortical part of the neencephalon	the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum