The words auricle, oracle sound the same but have different meanings and spellings. Why do auricle, oracle sound the same even though they are completely different words?
The answer is simple: auricle, oracle are homophones of the English language.
Anatomy The outer projecting portion of the ear. Also called pinna.
Anatomy See atrium.
Biology An earlobe-shaped part, process, or appendage, especially at the base of an organ.
In the Bible, the sanctuary of the Temple.
A shrine consecrated to the worship and consultation of a prophetic deity, as that of Apollo at Delphi.
A person, such as a priestess, through whom a deity is held to respond when consulted.
The response given through such a medium, often in the form of an enigmatic statement or allegory.
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.