unaccompanied vs lonely

unaccompanied and lonely both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unaccompanied	No	Yes	No	Yes
lonely	No	Yes	No	No

unaccompanied (adjective)	lonely (adjective)
being without an escort	marked by dejection from being alone
playing or singing without accompaniment	lacking companions or companionship
(of a state or an event) taking place without something specified occurring at the same time	devoid of creatures
	characterized by or preferring solitude

unaccompanied (adverb)	lonely (adverb)
without anybody else or anything else