Said and Viva voce

Said adjective - Mentioned previously.

Viva voce and said are semantically related In some cases you can use "Viva voce" instead an adjective "Said".

Viva voce adjective - Made or carried on through speaking rather than in writing.

Said and viva voce are semantically related in vocal topic. You can use "Said" instead an adjective phrase "Viva voce", if it concerns topics such as spoken, by word of mouth.