and to add to what's been said...
UV's are 2D coordinates ((u,v) if you will), that are projected onto 3D space ((x,y,z) coordinates)
uv-coordinates go between 0 and 1
their use and difference to verts has already been said 
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D