To quote WikiPedia, which as we all know is never wrong about anything, "A foreword is a (usually short) piece of writing often found at the beginning of a book or other piece of literature, before the introduction; this may or may not be written by the primary author of the work."
That's the word for an intro: Foreword. Not "Forward." Not "Foreward." Foreword. I have composed tons of them and if I title the manuscript page with that word, I always spell it correctly. You'd be amazed at the number of times I receive the printed book and discover I've written a foreward or a forward…and once, I'd even written a forword.
I have nothing more to say on this topic but I felt I had to say this. You can probably guess why.