middle of the roader vs moderationist

middle of the roader and moderationist both are nouns.

Word	Noun	Adjective	Verb	Adverb
middle of the roader	Yes	No	No	No
moderationist	Yes	No	No	No

As nouns, middle of the roader and moderationist are synonyms defined as:

middle of the roader and moderationist: a person who takes a position in the political center

Other synonyms of middle of the roader include centrist, moderate.

middle of the roader (noun)	moderationist (noun)
a person who takes a position in the political center	a person who takes a position in the political center
	a moderate drinker (as opposed to a total abstainer)