cerebral cortex vs cerebral mantle

cerebral cortex and cerebral mantle both are nouns.

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

As nouns, cerebral cortex and cerebral mantle are synonyms defined as:

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

Other synonyms of cerebral cortex include cortex, pallium.

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