buster vs broncobuster

buster and broncobuster both are nouns.

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

As nouns, buster and broncobuster are synonyms defined as:

Other synonyms of buster include bronco buster.

buster (noun)	broncobuster (noun)
a person (or thing) that breaks up or overpowers something	a person who breaks horses
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