significant vs of import

significant and of import both are adjectives.

Word	Noun	Adjective	Verb	Adverb
significant	No	Yes	No	No
of import	No	Yes	No	No

significant (adjective)	of import (adjective)
important in effect or meaning	of great significance or value
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