new vs unprecedented

new and unprecedented both are adjectives.

Word	Noun	Adjective	Verb	Adverb
new	No	Yes	No	Yes
unprecedented	No	Yes	No	No

new (adjective)	unprecedented (adjective)
not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered	having no precedent; novel; never seen before
unaffected by use or exposure
(of crops) harvested at an early stage of development; before complete maturity
lacking training or experience
original and of a kind not seen before
other than the former one(s); different
(often followed by `to') unfamiliar
having no previous example or precedent or parallel

new (adverb)	unprecedented (adverb)
very recently