lone vs lonesome

lone and lonesome both are adjectives.

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

As adjectives, lone and lonesome are synonyms defined as:

Other synonyms of lone include only, sole, solitary.

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