auricle / oracle are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
auricle: (noun) a small conical pouch projecting from the upper anterior part of each atrium of the heart. (noun) the externally visible cartilaginous structure of the external ear.
oracle: (noun) a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible. (noun) a shrine where an oracular god is consulted.
auricle: NA
oracle: AO·r·ah·k·ah·l
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)