3D modeling (also known as meshing) is the process of developing a mathematical representation of any three-dimensional surface of object (either inanimate or living) via specialized software. wikipedia.org

Character creation (also character generation or character design) is the process of defining a game character or other character. Typically, a character's individual strengths and weaknesses are represented by a set of statistics. Games with a largely fictional setting may include traits such as

Blender is a free and open-source 3D computer graphics software product used for creating animated films, visual effects, interactive 3D applications or video games. wikipedia.org

Animation is the rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. The effect is an optical illusion of motion due to the phenomenon of persistence of vision, and can be created and demonstrated in several ways. wikipedia.org

Character animation is a specialized area of the animation process, which involves bringing animated characters to life. wikipedia.org

Computer animation is the process used for generating animated images by using computer graphics. wikipedia.org

ZBrush is a digital sculpting tool that combines 3D/2.5D modeling, texturing and painting. It uses a proprietary "pixol" technology (see below) which stores lighting, color, material, and depth information for all objects on the screen. wikipedia.org