Oral communication and Viva voce

Oral communication noun - (language) communication by word of mouth.

Viva voce and oral communication are semantically related. In some cases you can use "Viva voce" instead a noun phrase "Oral communication".

Viva voce noun - An examination conducted by spoken communication.

Oral communication and viva voce are semantically related. Sometimes you can use "Oral communication" instead a noun phrase "Viva voce".