illogical vs incoherent

illogical and incoherent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
illogical	No	Yes	No	No
incoherent	No	Yes	No	No

illogical (adjective)	incoherent (adjective)
lacking in correct logical relation	without logical or meaningful connection
lacking orderly continuity	(physics) of waves having no stable definite or stable phase relation
	unable to express yourself clearly or fluently