thalmencephalon vs betweenbrain

thalmencephalon and betweenbrain both are nouns.

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

As nouns, thalmencephalon and betweenbrain are synonyms defined as:

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

Other synonyms of thalmencephalon include diencephalon, interbrain.

thalmencephalon (noun)	betweenbrain (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