Gerunds – These are words which end in “ing”. You should avoid having too many of these close together.
Ghosting – Whereby elements in the background are visible through foreground elements. Sometimes this occurs as an undesired effect when printing.
Gif – An image file designed specifically for the web. It allows transparency, and can also be animated. It typically has a low number of colours and small file size.
Glow – Can provide a similar effect to a drop-shadow, this will provide a glowing edge either on the inside or outside of a shape.
Gradient – A gradient defines with subtle blending from one colour to another.
Grid – A method which is used to layout content either for print or web. Well thought-out grids are based upon mathematical formula.
Guerilla – Usually followed by “advertising” or “marketing”, this applies to ambient media, often using people, stunts and props to create innovative campaigns.