middlebreaker vs middle buster

middlebreaker and middle buster both are nouns.

Word	Noun	Adjective	Verb	Adverb
middlebreaker	Yes	No	No	No
middle buster	Yes	No	No	No

As nouns, middlebreaker and middle buster are synonyms defined as:

middlebreaker and middle buster: moldboard plow with a double moldboard designed to move dirt to either side of a central furrow

Other synonyms of middlebreaker include lister, lister plough, lister plow.

middlebreaker (noun)	middle buster (noun)
moldboard plow with a double moldboard designed to move dirt to either side of a central furrow	moldboard plow with a double moldboard designed to move dirt to either side of a central furrow