new vs unaccustomed to

new and unaccustomed to both are adjectives.

Word	Noun	Adjective	Verb	Adverb
new	No	Yes	No	Yes
unaccustomed to	No	Yes	No	No

new (adjective)	unaccustomed to (adjective)
not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered	not habituated to; unfamiliar with
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)	unaccustomed to (adverb)
very recently