buster vs dude

buster and dude both are nouns.

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

As nouns, buster and dude are synonyms defined as:

Other synonyms of buster include fellow.

buster (noun)	dude (noun)
a person (or thing) that breaks up or overpowers something	a man who is much concerned with his dress and appearance
a person who breaks horses	an informal form of address for a man
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