client, consumer, buyer, employee, user, salesperson, business, vendor, service, company, more...

supplier, vendor, seller, provider, distributor

new, existing, prospective, retained, lost, reactivated, more...

new, potential, prospective, best, first, regular, single, particular, individual, next, important

apple store patron,   bank client,   client of a sort,   a client,   pizzeria patron,   tech support caller,   new client,   tech support client,   restaurant patron,   user of service