The word "dendrology" comes from the Greek words "dendron" (tree) and "logos" (study). Dendrologists study all aspects of trees, including:

* Taxonomy: Identifying and classifying different tree species.

* Ecology: Understanding the interactions between trees and their environment.

* Physiology: Investigating how trees function and grow.

* Genetics: Studying the genetic makeup of trees.

* Pathology: Diagnosing and treating tree diseases.

* Silviculture: Managing forests and tree plantations.

Dendrologists work in various fields, including research institutions, forestry agencies, conservation organizations, and universities.