Street art is visual art created in public locations for public visibility.
Street art has evolved from the early forms of defiant graffiti into a more commercial form of art, as one of the main differences now lies with the messaging. Street art is often meant to provoke thought rather than rejection among the general audience through making its purpose more evident than that of graffiti. The issue of permission has also come at the heart of street art, as graffiti is usually done illegally, whereas street art can nowadays be the product of an agreement or even sometimes a commission. However, it remains different from traditional art exposed in public spaces by its explicit use of said space in the conception phase.

Street art is a form of artwork that is displayed in public on surrounding buildings, on streets, trains and other publicly viewed surfaces. Many instances come in the form of guerrilla art, which is intended to make a personal statement about the society that the artist lives within. The work has moved from the beginnings of graffiti and vandalism to new modes where artists work to bring messages, or just beauty, to an audience.

Slogans of protest and political or social commentary graffiti on walls are the precursor to modern graffiti and street art, and continue as one aspect of the genre. Street art in the form of text or simple iconic graphics of corporate icons can become well-known yet enigmatic symbols of an area or an era

Graffiti is characteristically made up of written words that are meant to represent a group or community in a covert way and in plain sight. The telltale sign of street art is that it usually includes images, illustrations, or symbols that are meant to convey a message. While both works are meant to represent or tell a message to viewers, one difference between the two comes in the specific viewers that it is meant for. One trait of street art that has helped to bring it to positive light in the public eye is that the messages shown are usually made to be understandable to all.