These are words, often used by rappers to sound even more incomprehensible.
They are used at the beginning of question.
Ex. :
Douga know what time it is ?
The Doctor : … and then, just to finish off, I’m going to wipe every last stinking Dalek out of the sky !
Dalek : But you have no weapons ! No defenses ! No plan !
The Doctor : Yeah ! And doesn’t that scare you to death ?
Douga = where they make the cel of
Genga = drawing of character designer to show at the animators how it should look like
rough sketches = same principal as genga, to show how it would look like
Sketch = what we call it when we can't dredge up the definition of either genga or douga from the recesses of the mind.
Same principle as the word "impacted." When you can't remember whether the correct word is "affected" or "effected", make up a new definition for an existing word!
Douga: The image you will see on a cel. The black pencil lines will become the black trace lines.
Genga is a little harder to define, because a lot of people use it in reference to all of the sketches that come before the douga. Technically, I think it's the key animator's final drawing for the key cel(s) in a sequence. In other words, every cel has a douga, but not every cel has a genga.
It took me awhile to finally get down the difference between genga, douga, layout, roughs, etc. I got them down after I bought a few of them and had them in hand. Until then I kept forgetting the differences.