Urban art is a style of art that relates to cities and city life often done by artists who live in or have a passion for city life. The term urban means „from the city“. Sometimes Urban art is called „street art“.
Pop Surrealism, or lowbrow art, describes an underground visual art movement that arose in the Los Angeles, California, area in the late 1970s. Lowbrow is a widespread populist art movement with origins in the underground comix world, punk music, hot-rod street culture, and other subcultures. Lowbrow art often has a sense of humour - sometimes the humour is gleeful, sometimes impish, and sometimes it‘s a sarcastic comment.
Most lowbrow artworks are paintings, but there are also toys, digital art, and sculpture.
(cf Wikipedia www.wikipedia.org)