lone hand vs loner

lone hand and loner both are nouns.

Word	Noun	Adjective	Verb	Adverb
lone hand	Yes	No	No	No
loner	Yes	No	No	No

As nouns, lone hand and loner are synonyms defined as:

lone hand and loner: a person who avoids the company or assistance of others

Other synonyms of lone hand include lone wolf.

lone hand (noun)	loner (noun)
a person who avoids the company or assistance of others	a person who avoids the company or assistance of others