broncobuster vs buster

broncobuster and buster both are nouns.

Word	Noun	Adjective	Verb	Adverb
broncobuster	Yes	No	No	No
buster	Yes	No	No	No

As nouns, broncobuster and buster are synonyms defined as:

Other synonyms of broncobuster include bronco buster.

broncobuster (noun)	buster (noun)
a person who breaks horses	a person (or thing) that breaks up or overpowers something
	a person who breaks horses
	a robust child
	an informal form of address for a man
	a person born in the generation following the baby boom when the birth rate fell dramatically