important vs crucial

important and crucial both are adjectives.

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

As adjectives, important and crucial are synonyms defined as:

important and crucial: of extreme importance; vital to the resolution of a crisis

important (adjective)	crucial (adjective)
of great significance or value	of extreme importance; vital to the resolution of a crisis
of extreme importance; vital to the resolution of a crisis	of the greatest importance
important in effect or meaning	having crucial relevance
having or suggesting a consciousness of high position
having authority or ascendancy or influence