The words shoed, shooed sound the same but have different meanings and spellings. Why do shoed, shooed sound the same even though they are completely different words?
The answer is simple: shoed, shooed are homophones of the English language.
Simple past tense and past participle of shoe.
Used to frighten away animals or birds.
To drive or frighten away by or as if by crying "shoo.”
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").