Oral-Verbal | Commonly Confused Words

Oral

/ˈɔːrəl/

Relating to the mouth, spoken words, or verbal communication

Her oral presentation captivated the audience.The contract was based on an oral agreement.Oral history traditions enrich cultural heritage.

This word has no antonyms

/ˈvəːb(ə)l/

Using spoken or written words to communicate

No one made any verbal response to the voice.Victor sighs, cutting off my verbal daydream.The invitation was refused, and by a verbal message.

Both words relate to communication but in slightly different contexts.
Verbal can be used to describe anything related to words, whether spoken or written.
Oral specifically refers to communication that is spoken and not written.
One can think of oral as coming out of the oral cavity – the mouth.
Verbal derives from verbalize, meaning to express using words, which can be either out loud or on paper.