untested vs new

untested and new both are adjectives.

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

untested (adjective)	new (adjective)
not tried or tested by experience	not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered
not yet proved or subjected to testing	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

untested (adverb)	new (adverb)
	very recently