Ubuntu vs. Kubuntu

[Aiello]

Well, I don't know where to put this, so sticking it here seems safe. What are the main differences between Ubuntu and Kubuntu, (besides one being brown and the other blue)? Are there any major system performance differences?

Also, I have heard that Kubuntu looks a lot like Windows. Is this so? Because that might be a bit more familiar to me, having been born and raised on Windows.

[Kingsley]

Check this out.
http://www.psychocats.net/ubuntu/kdegnome

[p_quarles]

KDE looks a bit more like Windows by default, but that's pretty much where the similarities end. I use KDE, and I think it's a great desktop, but it's not Windows.

[inversekinetix]

its the same engine just different bodywork.