abstract
adjective
/ˈabstrakt/
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existing in thought or as an idea but not having a physical or concrete existence.“abstract concepts such as love or beauty”
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relating to or denoting art that does not attempt to represent external reality, but rather seeks to achieve its effect using shapes, colours, and textures.
Abstract photography, sometimes called non-objective, experimental, conceptual or concrete photography, is a means of depicting a visual image that does not have an immediate association with the object world and that has been created through the use of photographic equipment, processes or materials.