neopallium vs cerebral mantle

neopallium and cerebral mantle both are nouns.

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

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

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

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

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