abstract
/'abstrakt/
1.existing in thought or as in idea but not
having a physical or concrete existence
"abstract concepts such as love or beauty"
2.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 pictures"
Abstract art is art that does not attempt to represent an accurate depiction of a visual reality but instead uses shapes, colours, forms and gestural marks to achieve its effect.