limbic system vs visceral brain

limbic system and visceral brain both are nouns.

Word	Noun	Adjective	Verb	Adverb
limbic system	Yes	No	No	No
visceral brain	Yes	No	No	No

As nouns, limbic system and visceral brain are synonyms defined as:

limbic system and visceral brain: a system of functionally related neural structures in the brain that are involved in emotional behavior

Other synonyms of limbic system include limbic brain.

limbic system (noun)	visceral brain (noun)
a system of functionally related neural structures in the brain that are involved in emotional behavior	a system of functionally related neural structures in the brain that are involved in emotional behavior