As verbs the difference between brag and swank
is that
brag is to boast; to talk with excessive pride about what one has, can do, or has done while
swank is to swagger, to show off.
As nouns the difference between brag and swank
is that
brag is a boast or boasting; bragging; ostentatious pretence or self-glorification while
swank is a fashionably elegant person.
As adjectives the difference between brag and swank
is that
brag is first-rate while
swank is (dated) fashionably elegant.
As an adverb brag
is (obsolete) proudly; boastfully.