rhinencephalon vs olfactory brain

rhinencephalon and olfactory brain both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhinencephalon	Yes	No	No	No
olfactory brain	Yes	No	No	No

As nouns, rhinencephalon and olfactory brain are synonyms defined as:

rhinencephalon and olfactory brain: a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior

rhinencephalon (noun)	olfactory brain (noun)
a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior	a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior