splitter vs rail-splitter

splitter and rail-splitter both are nouns.

Word	Noun	Adjective	Verb	Adverb
splitter	Yes	No	No	No
rail-splitter	Yes	No	No	No

As nouns, splitter and rail-splitter are synonyms defined as:

splitter and rail-splitter: a laborer who splits logs to build split-rail fences

splitter (noun)	rail-splitter (noun)
a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics	a laborer who splits logs to build split-rail fences
a worker who splits fish and removes the backbone
a laborer who splits logs to build split-rail fences