Abstract art is now generally understood to mean art that does not depict objects in the natural world, but instead uses colour and form in a non-representational way. In the very early 20th century, the term was more often used to describe art, such as Cubist and Futurist art, that depicts real forms in a simplified or rather reduced way—keeping only an allusion of the original natural subject. Such paintings were often claimed to capture something of the depicted objects' immutable intrinsic qualities rather than its external appearance. (See abstraction.) The more precise terms, "non-figurative art," "non-objective art," and "non-representational art" avoid any possible ambiguity.