Functional area is the department you work in. Your department may exist in any firm or company. For example, the departments of Marketing, Sales, Public relations, or Finance can be found in various industries, such as Consulting firms, Auto companies, Media houses, or Oilfield companies. Thus, the former are Functional Areas (Departments), and the latter are Industries (firms, companies). Another way to understand this is that Functional Areas are ‘horizontals’ and the Industries as 'verticals'.
Some people may have the same Functional Area and Industry, such as someone working in the Accounts department in an Accounting firm. But someone working in the Accounts department of a FMCG conglomerate will have Accounts as the Functional Area but FMCG as the Industry.
If you don’t find the functional area you think you belong to, please select the functional area nearest/closest to yours.