lonesome vs lone

lonesome and lone both are adjectives.

Word	Noun	Adjective	Verb	Adverb
lonesome	No	Yes	No	No
lone	No	Yes	No	No

As adjectives, lonesome and lone are synonyms defined as:

Other synonyms of lonesome include only, sole, solitary.

lonesome (adjective)	lone (adjective)
marked by dejection from being alone	being the only one; single and isolated from others
being the only one; single and isolated from others	lacking companions or companionship
	characterized by or preferring solitude