fresh vs unused

fresh and unused both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fresh	No	Yes	No	Yes
unused	No	Yes	No	No

As adjectives, fresh and unused are synonyms defined as:

fresh (adjective)	unused (adjective)
recently made, produced, or harvested	not yet used or soiled
not canned or otherwise preserved	not in active use
not containing or composed of salt water	not yet put into use
not yet used or soiled
improperly forward or bold
imparting vitality and energy
(of a cycle) beginning or occurring again
original and of a kind not seen before
free from impurities
with restored energy
not soured or preserved
having recently calved and therefore able to give milk

fresh (adverb)	unused (adverb)
very recently