caudate vs caudal

caudate is a noun but caudal is not a noun.

Word	Noun	Adjective	Verb	Adverb
caudate	Yes	Yes	No	No
caudal	No	Yes	No	Yes

caudate (noun)	caudal (noun)
amphibians that resemble lizards
a tail-shaped basal ganglion located in a lateral ventricle of the brain

caudate (adjective)	caudal (adjective)
having a tail or taillike appendage	constituting or relating to a tail
(of a leaf shape) tapering gradually into a long taillike tip	resembling a tail
	situated in or directed toward the part of the body from which the tail arises

caudate (adverb)	caudal (adverb)
	toward the posterior end of the body