important vs epochal

important and epochal both are adjectives.

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

important (adjective)	epochal (adjective)
of great significance or value	highly significant or important especially bringing about or marking the beginning of a new development or era
of extreme importance; vital to the resolution of a crisis
important in effect or meaning
having or suggesting a consciousness of high position
having authority or ascendancy or influence