The words pealing, peeling sound the same but have different meanings and spellings. Why do pealing, peeling sound the same even though they are completely different words?
The answer is simple: pealing, peeling are homophones of the English language.
Present participle of peal.
A piece or strip, as of skin or vegetable rind, that has been peeled off.
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.