What is the difference among "division", "department" and "section" ?
Human Resources(HR) Division, HR Department and HR Section are all equally often used in western countries and all of them has same meaning?
section is one of the parts that something is divided into
department is a part of an organization such as a school, business, or government that deals with a particular area of study or work
So, these two both mean a part, but department clarifies that it is part of an organization.
division means a separate part of an army or large organization
Note the word separate there.
The term Human Resources Division can have the same meaning as department or section, but it is more often used about a separate part of a group of companies: for example PA Consulting Group has a number of separate business units or divisions that offer consultancy services in a particular area- Human Resources Division, Technology division, Supply Chain Division. Within each division, there is probably a Human resources department or section that services the HR needs of that division.