The words said, sed sound the same but have different meanings and spellings. Why do said, sed sound the same even though they are completely different words?
The answer is simple: said, sed are homophones of the English language.
you can say that again Slang Used to express strong agreement with what has just been said.
to say nothing of And there is no need to mention. Used to allude to things that fill out an idea or argument: The yard is a mess, to say nothing of the house.
that is to say In other words.
I say Used as an exclamation of surprise, delight, or dismay.
Law Named or mentioned before; aforementioned: Said party has denied the charges.
Past tense and past participle of say.
Definitions 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.