interbrain vs thalmencephalon

interbrain and thalmencephalon both are nouns.

Word	Noun	Adjective	Verb	Adverb
interbrain	Yes	No	No	No
thalmencephalon	Yes	No	No	No

As nouns, interbrain and thalmencephalon are synonyms defined as:

interbrain and thalmencephalon: the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon

Other synonyms of interbrain include betweenbrain, diencephalon.

interbrain (noun)	thalmencephalon (noun)
the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon	the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon