meaningless vs insignificant

meaningless and insignificant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
meaningless	No	Yes	No	No
insignificant	No	Yes	No	No

meaningless (adjective)	insignificant (adjective)
having no meaning or direction or purpose	devoid of importance, meaning, or force
producing no result or effect	signifying nothing
	of little importance or influence or power; of minor status
	small and unimpressive