The words reck, wreck sound the same but have different meanings and spellings. Why do reck, wreck sound the same even though they are completely different words?
The answer is simple: reck, wreck are homophones of the English language.
To take heed of or to have caution.
The act of wrecking or the state of being wrecked; destruction.
Accidental destruction of a ship; a shipwreck.
The stranded hulk of a severely damaged ship.
Fragments of a ship or its cargo cast ashore by the sea after a shipwreck; wreckage.
Definitions 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.