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