Realism:

Realism, sometimes called naturalism, in the arts is generally the attempt to represent subject matter truthfully, without artificiality and avoiding artistic conventions, or implausible, exotic, and supernatural elements. Realism has been prevalent in the arts at many periods, and can be in large part a matter of technique and training, and the avoidance of stylisation. In the visual arts, illusionistic realism is the accurate depiction of lifeforms, perspective, and the details of light and colour.

The development of increasingly accurate representation of the visual appearances of things has a long history in art. It includes elements such as the accurate depiction of the anatomy of humans and animals.