Three characteristics of abstract art?

1. Abstract art uses visual language of shape, form, color and line to create a composition which may exist with a degree of independence from visual references in the world.

2. Abstraction indicates a departure from reality in depiction of imagery in art.

3. The primary characteristic of abstract art is that it has no conspicuous subject.

Where are the following

The term collage was coined by both  georges braque  and  pablo picasso  in the beginning of the 20th century when collage became a distinctive part of modern art.hope this sorry if there wasn't more of an explanation!