User Experience Design - how the user thinks and feels
Information Architecture - how the system is organized
User Interface Design - how the content is organized
Interaction Design - how the user and device act and react
Visual Design - how it looks
Some or all of the above disciplines are part of the following fields:
Architecture, when related to buildings
Interior design, when related to internal spaces
Industrial design, when related to tangible objects
Graphic design, when related to text and images
Application design, when related to digital I/O
Web design, when related to the browser
