archipallium vs cerebral mantle

archipallium and cerebral mantle both are nouns.

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

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

archipallium: the olfactory cortex of the cerebrum
cerebral mantle: the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum

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

archipallium (noun)	cerebral mantle (noun)
the olfactory cortex of the cerebrum	the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum