> Wavelength - Frequency
> Generator - Transformer
>
> These are a few of the related-but-very-different words that my mind somehow confuses all the time. I know what they mean individually, but what does that have to do with it? Somehow, these word pairs got hard-wired into my brain as synonymous when I was much younger, and I haven't been able to break it yet. Are there any word-pairs that any of you guys _always_ stumble over?

Well, off the top of my head, there's "ridiculous - rediculous." The former means "worthy of ridicule," while the latter means "diculous again."

Dar "That one was for Sam ;-}" ien