Sans and Sans-Serif:Serifs are semi-structural details or small decorative flourishes on the ends of some of the strokes that make up letters and symbols. An example would be the Times New Roman font. Sans serif does not have these details or flourishes. An example would be the Arial font.
Text: A meaningful string of characters - letters, number, symbols or punctuation. Text should accent the main message as well as provide a body of information on each screen.
Graphics: Graphics (from Greek γραφικός graphikos, 'something written' e.g. autograph) are visual images or designs on some surface, such as a wall, canvas, screen, paper, or stone to inform, illustrate, or entertain.
Interactivity: The extent to which something is interactive; the extent to which a computer program and human being may have a dialog
Animation: The illusion of movement acheived by displaying a series of static images, called frames, in a rapid sequence.