betweenbrain vs interbrain

betweenbrain and interbrain both are nouns.

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

As nouns, betweenbrain and interbrain are synonyms defined as:

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

Other synonyms of betweenbrain include diencephalon, thalmencephalon.

betweenbrain (noun)	interbrain (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