mule skinner vs skinner

mule skinner and skinner both are nouns.

Word	Noun	Adjective	Verb	Adverb
mule skinner	Yes	No	No	No
skinner	Yes	No	No	No

As nouns, mule skinner and skinner are synonyms defined as:

Other synonyms of mule skinner include mule driver, muleteer.

mule skinner (noun)	skinner (noun)
a worker who drives mules	a person who prepares or deals in animal skins
	a worker who drives mules