Trunk

The trunk is the permanent, aboveground woody stem of a tree or vine.

A cordon is a long arm, usually trained along a wire, from which fruiting canes develop.

Fruiting canes are the one-year-old canes that will produce the current year’s fruit.

Structure of a grape vine.
 
Photo by Agne27 / CC BY http://creativecommons.org/licenses/by/2.0/