The words nae, nay, Ne, nee, neigh sound the same but have different meanings and spellings. Why do nae, nay, Ne, nee, neigh sound the same even though they are completely different words?
The answer is simple: nae, nay, Ne, nee, neigh are homophones of the English language.
No: All but four Democrats voted nay.
And moreover: He was ill-favored, nay, hideous.
A denial or refusal.
A negative vote or voter.
The symbol for the element neon.
Used when giving the maiden name of a woman.
Used when giving a former name. Originally known as.
no, used to express no as a quantity, i.e. not any, like German kein/Dutch geen/French rien. Compare with na.
The long, high-pitched sound made by a horse.
To utter the characteristic sound of a horse; whinny.
Definitions from The American Heritage® Dictionary of the English Language, 4th Edition, from Wiktionary, Creative Commons Attribution/Share-Alike License and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.