signify vs significant

signify is not an adjective while significant is an adjective.

Word	Noun	Adjective	Verb	Adverb
signify	No	No	Yes	No
significant	No	Yes	No	No

signify (adjective)	significant (adjective)
	important in effect or meaning
	too closely correlated to be attributed to chance and therefore indicating a systematic relation
	of considerable importance, size, or worth
	rich in significance or implication

signify (verb)	significant (verb)
convey or express a meaning
make known with a word or signal
denote or connote