Stock: Images that still have the background in them.
Render: Cut-out part of an image or a 3d object/image.
C4D: Abstract render made in Cinema 4D, used to give effects.
Effect C4d: Used to give depth and effects, used with blending modes like 'screen, lighten, soft light'.
Font: A style which makes text look different
Color: The color(s) of your work.
Blending: How it blends/matches with the background, how everything fits.
Opacity: The transparency of something you did in your work.
Sprite: A pixelized character render, from old games like nintendo etc.
CnC: Comments and Criticism
Defaults: Meaning that the work people made didn't use anything downloaded, like brushes.
Brushes: Used to make backgrounds or effects in your work.
WIP: Work in progress
BG: Background
Light Source: The lighting in your signature, made by a 200px white soft brush near the renders head or top.
Flow: The overall direction of your sig, the direction where all the effects and brushes go with.
I think that this will seriously help people learn about gfx.
If you think i forgot any just post it here.
Also, this is mainly for signatures, but can be used for other things.