Retro is a culturally outdated or aged style, trend, mode, or fashion, from the overall postmodern past, that has since that time become functionally or superficially the norm once again. The use of "retro" style iconography and imagery interjected into post-modern art, advertising, mass media, etc. It generally implies a vintage of at least 15 or 20 years.
The word classic means something that is a perfect example of a particular style, something of lasting worth or with a timeless quality. The word can be an adjective (a classic car) or a noun (a classic of English literature).
