Branch
Branch (tree)
A part of a tree that grows out from the trunk.
A parrot sat on the mango tree's lowest branch.
Branch (office)
One office or shop of a larger company.
The bank has a new branch near our school.
Branch (subject part)
One part of a large subject or family.
Botany is a branch of biology.
Remember: Picture a tree: one trunk, many branches. A company, a subject and a family all spread out the same way.