The words stakes, steaks sound the same but have different meanings and spellings. Why do stakes, steaks sound the same even though they are completely different words?
The answer is simple: stakes, steaks are homophones of the English language.
Plural form of stake.
Third-person singular simple present indicative form of stake.
Plural form of steak.
Definitions 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.