Small Business - commonly used terms

I come across a lot of small business owners and almost with everyone I find that commonly used business terms and definitions are not very clear or the business owners barely understand what I meant. I guess the business owners do their business and let the accountants figure out what those terms mean. I thought why not have a little start up with commonly used terms before we get into details of small business and small business financing. Here I started with 'A' and will post alphabetically. Hope you will get a clear understanding of the terms and definitions.