The words foreward, foreword, forward sound the same but have different meanings and spellings. Why do foreward, foreword, forward sound the same even though they are completely different words?
The answer is simple: foreward, foreword, forward are homophones of the English language.
An advance group; the vanguard.
Common misspelling of forward.
A preface or an introductory note, as for a book, especially by a person other than the author.
To help advance; promote. See Synonyms at advance.
Ardently inclined; eager.
At, near, or belonging to the front or forepart; fore: the forward section of the aircraft.
Located ahead or in advance: kept her eye on the forward horizon.
Definitions from Wiktionary, Creative Commons Attribution/Share-Alike License, from The American Heritage® Dictionary of the English Language, 4th Edition and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.
If they are spelled the same then they are also homographs (and homonyms); if they are spelled differently then they are also heterographs (literally "different writing").