Folk art

Folk art describes a wide range of objects that reflect the craft traditions and traditional social values of various social groups. Folk art is generally produced by people who have little or no academic artistic training, nor a desire to emulate "fine art", and use established techniques and styles of a particular region or culture. Along with painting, sculpture, and other decorative art forms, some also consider utilitarian objects such as tools and costume as folk art.
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Noun
1. genre of art of unknown origin that reflects traditional values of a society
(hypernym) genre

work executed by artists with little or no formal training - traditional techniques - handed down through generations - opposed to fine art - compare naive art and outsider art 

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n. ศิลปะพื้นบ้าน