Nouns

(n)fellow, dude, busteran informal form of address for a man“Say, fellow, what are you doing?”, “Hey buster, what's up?”
(n)bustera robust child
(n)buster, bronco buster, broncobustera person who breaks horses
(n)bustera person (or thing) that breaks up or overpowers something“dam buster”, “sanction buster”, “crime buster”
(n)baby buster, bustera person born in the generation following the baby boom when the birth rate fell dramatically