The words wrested, rested sound the same but have different meanings and spellings. Why do wrested, rested sound the same even though they are completely different words?
The answer is simple: wrested, rested are homophones of the English language.
not tired; refreshed as by sleeping or relaxing
Simple past tense and past participle of <xref>rest</xref>.
Simple past tense and past participle of <xref>wrest</xref>.
Definitions from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved., 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.