General And Administrative Expense - G&A
  
See: SG&A. See: Overhead.
When you read "administrative," think "bureaucracy" and then ask, "How long until robots replace most of this overhead?"
You own a business. Every day you have expenses such as rent, utilities, office supplies, coffee etc. You have items and bills you have to pay in order to operate as a business. How can you go about daily operations without pens? Or filing cabinets? Or, most importantly, a coffee machine?