lonely vs unaccompanied

lonely and unaccompanied both are adjectives.

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

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

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