Customer base - The total list of customers of a business, as well as the total number of potential customers with specific classification or buying characteristics.
Market segment - A subgroup of people or organisations sharing one or more characteristics that cause them to have similar product needs.
Market type – What kind of market you are dealing with. This could refer to e.g. export vs. local market.
Product range – How many products are on offer. E.g. assorted brands and types of canned food available for sale in a grocery store.