The trunk of a tree is called a 'bole'.
Yes. A trunk is not only a stem but it is the main stem of a tree.
baobab tree
trunk
A tree or shrub is a plant that has a thick stem called a trunk and branches with leaves on them. The trunk and branches are brown and the leave are usually green, yellow, red or purple.
Bole
The woodpecker
The name of the stem of a plant is called a stalk. If it is soft it is a herbaceous Weak ones are called climbers, and swollen or broken ones are called galls.
Bark covers a tree trunk.
Most species in the genus roystonea (Royal Palms) have the green leafshaft crown.
a tree
the outer part of a tree trunk