paleencephalon vs palaeencephalon

paleencephalon and palaeencephalon both are nouns.

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

As nouns, paleencephalon and palaeencephalon are synonyms defined as:

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

Other synonyms of paleencephalon include paleoencephalon.

paleencephalon (noun)	palaeencephalon (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