conceptual art
US /kənˈsep.tʃu.əl ɑːrt/
UK /kənˈsep.tʃu.əl ɑːrt/

1.
art in which the idea or concept behind the work is more important than the finished art object, if there is one
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Marcel Duchamp is often considered a pioneer of conceptual art.
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Many contemporary artists explore themes of identity and society through conceptual art.