palaeencephalon vs paleencephalon

palaeencephalon and paleencephalon both are nouns.

Word	Noun	Adjective	Verb	Adverb
palaeencephalon	Yes	No	No	No
paleencephalon	Yes	No	No	No

As nouns, palaeencephalon and paleencephalon are synonyms defined as:

palaeencephalon and paleencephalon: the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex

Other synonyms of palaeencephalon include paleoencephalon.

palaeencephalon (noun)	paleencephalon (noun)
the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex	the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex