existent vs exist

existent is an adjective but exist is not an adjective.

Word	Noun	Adjective	Verb	Adverb
existent	No	Yes	No	No
exist	No	No	Yes	No

existent (adjective)	exist (adjective)
having existence or being or actuality
being or occurring in fact or actuality; having verified existence; not illusory
presently existing in fact and not merely potential or possible

existent (verb)	exist (verb)
	have an existence, be extant
	support oneself