Dic: wood vs. trunk (and, perhaps, flesh vs. body)

■ wood

• △Wood is the material which forms the trunks and branches of trees: ex) Their dishes were made of wood... There was a smell of damp wood and machine oil.  ..a short piece of wood.
• △the hard fibrous substance consisting of xylem tissue that occurs beneath the bark in trees, shrubs, and similar plants. (Related adjs: ligneous, xyloid)

■ trunk (of a tree)

• △The trunk of a tree is the large main stem from which the branches grow.
• △the main stem of a tree, usually thick and upright, covered with bark and having branches at some distance from the ground.

..... COBUILD, COLLINS

CF. flesh and (something like a) body
CF. 몸통(trunk, torso). 몸통을 보호하다: protect one's trunk[torso]
CF. tree trunk: 나무둥치, 수간(樹幹)
CF. 둥치(큰 나무의 밑동), 둥치(the base of a tree trunk)