important vs critical

important and critical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
important	No	Yes	No	No
critical	No	Yes	No	No

important (adjective)	critical (adjective)
of great significance or value	marked by a tendency to find and call attention to errors and flaws
of extreme importance; vital to the resolution of a crisis	characterized by careful evaluation and judgment
important in effect or meaning	being in or verging on a state of crisis or emergency
having or suggesting a consciousness of high position	at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction
having authority or ascendancy or influence	of or involving or characteristic of critics or criticism
	forming or having the nature of a turning point or crisis
	urgently needed; absolutely necessary