Aural relates to the ear and hearing. Oral relates to the mouth, and to things that are spoken. Memory hook: aural goes with the ear, and oral goes with the mouth.
The core difference
Aural is about hearing and the ear, while oral is about the mouth and spoken language.
- aural — relating to the ear, sound or hearing: The test measured her aural comprehension of the recording.
- oral — relating to the mouth, or spoken rather than written: Students must pass both a written and an oral exam.
How to tell them apart
The two words sound alike in many accents, so it helps to link each to a body part. Aural goes with the ear, and it comes from the Latin word for ear. Oral goes with the mouth, from the Latin word for mouth.
The confusion shows up in language teaching and testing. An aural skill is what you do when you listen, and an oral skill is what you do when you speak. A listening test is aural, and a speaking test is oral.