Tongue (Now there's an easy one! It looks like a tongue.)
Shoulder (It's much like a human shoulder, well, one that will never rotate, ever again, once joined.)
Mort - Mortise and Tenon (How does one remember which part is the mortise and which is the tenon??? How many times have I asked Sandy? She's my source for anything 'shop' because she doesn't roll her eyes or sit back in her chair with an impatient expression when I ask dumb questions. Although, if I ask which is mortise and which is tenon, one more time, Sandy might clobber me or at least think me mentally deficient.
So I've devised a method. I think Mortimer instead of mortise, and I know that 'ol Mort has a hole in his head because that's how I picture him. Poor 'ol Mort.)
Dovetail (Easy. It describes itself perfectly. I, however, would have named this joinery, fishtail. But I can remember either.)
Doublemort (Just double poor 'ol Mort.)
Our web page on joinery demonstrates these terms in timber photos, and Wikipedia offers a detailed picture on wood joinery. It's a great page.
I guess that wasn't too painful. I might learn a few more terms. Let them fly!