Knowledge of the proper name for each part of the Cannabis plant can help one describe problems with a cultivar

Leaves

Types of leaf

Sugar leaves

Small leaves with trichomes that grow from the buds. They are trimmed before the bud is smoked, either before or after drying.

Fan leaves

Parts of the leaf

Petiole (leaf stem)

Apex

Ventral surface

Dorsal surface

Margin

Stomata

Buds

Cola

Trichromes

Trichromes are resin filled glands that appear on the sugar leaves and buds of Cannabis in the flowering stage. They contain THC, CBD, and other cannabinoids

Terpenes

Calyx

Plant body

Node

Points on the steam where lateral branches grow from the main stem