simple vs caudate

simple and caudate both are nouns.

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

simple (noun)	caudate (noun)
a person lacking intelligence or common sense	amphibians that resemble lizards
any herbaceous plant having medicinal properties	a tail-shaped basal ganglion located in a lateral ventricle of the brain

simple (adjective)	caudate (adjective)
(botany) of leaf shapes; of leaves having no divisions or subdivisions	having a tail or taillike appendage
having few parts; not complex or complicated or involved	(of a leaf shape) tapering gradually into a long taillike tip
easy and not involved or complicated
exhibiting childlike simplicity and credulity
unornamented
lacking mental capacity and subtlety
apart from anything else; without additions or modifications