essential vs constitutional

essential and constitutional both are nouns.

Word	Noun	Adjective	Verb	Adverb
essential	Yes	Yes	No	No
constitutional	Yes	Yes	No	No

essential (noun)	constitutional (noun)
anything indispensable	a regular walk taken as a form of exercise

essential (adjective)	constitutional (adjective)
basic and fundamental	sanctioned by or consistent with or operating under the law determining the fundamental political principles of a government
defining rights and duties as opposed to giving the rules by which rights and duties are established	of benefit to or intended to benefit your physical makeup
being or relating to or containing the essence of a plant etc	constitutional in the structure of something (especially your physical makeup)
of the greatest importance	existing as an essential constituent or characteristic
absolutely necessary; vitally necessary