Сегодня шеф удивил фактом что оказывается есть разница между словами customer ("покупатель") и client ("клиент"). В первом случае имеется в виду любой покупатель, к которому, например, приходишь с рекламой своих услуг, а вот клиент - это уже кто на эти услуги подписался. В первом случае речь идёт о краткосрочных отношениях, во втором - о долгосрочных.
Summary:
1. Customer and client, while they essentially refer to people who buy things, have different shades of meaning.
2.Clients are people who have a long term relationship with a service provider whereas a customer has a short term relationship.
3.Clients sometimes also have a relationship of protection or additional services with their provider while this is not present in a customer-provider relationship.
4.The word client usually has a connotation that implies professionalism and stability while customers are pretty connotatively neutral.
Read more: Difference Between Client and Customer | Difference Between | Client vs Customer
http://www.differencebetween.net/business/difference-between-client-and-customer/#ixzz2I1MHm0rH A customer = person who buys goods or a service
A client= a person who receives services; a customer
http://forum.wordreference.com/showthread.php?t=4813 Client vs. customer
The nouns client and customer are sometimes used interchangeably-especially by businesses seeking to show customers extra respect by referring to them as “clients”-but the words differ in their conventional definitions.
Client
A client is someone who engages the services of a professional. For example, lawyers, plumbers, freelance writers, accountants, and web designers often work for clients. So these writers use the word well:
Provincial court Judge Brian Stevenson agreed with defence counsel Jim Lutz such a prohibition was warranted to preserve his client’s right to a fair trial. [Toronto Sun]
Brokers don’t have to act in a client’s best interest when dispensing advice, but a new study from the Securities and Exchange Commission recommends changing that. [The Baltimore Sun]
The agent for Carson Palmer reiterated Monday his client’s desire to part with the Bengals this offseason. [Rotoworld.com]
Customer
A customer buys goods or services from a business (rather than an individual or group of professionals). So it works well in these sentences:
Zappos.com and its parent, Amazon.com, provide the best customer service, according to a survey commissioned by the National Retail Federation Foundation and American Express. [The Consumerist]
Jim Carlson, the shop’s owner, referred to the man as a regular customer. [Duluth News Tribune]
http://grammarist.com/usage/client-customer/ First, word origins: Customer’s root word, custom, ultimately derives from the Latin verb consuescere, “to accustom,” and the sense of a person who buys something from another perhaps stems from the idea of purchasing as being a habit. Client (the plural can be clients or clientele) also comes from Latin, in the form of clientem, “follower,” which may be related to the root word of incline. This sense persists in the phrase “client state,” referring to a nation dependent on another for security or other support.
The two terms have traditionally differed widely in usage: A customer is simply a recipient of products or services in exchange for money. Even though the relationship to the provider might be long lasting, the sense is of discrete exchanges. By contrast, a client is engaged in a more qualitative relationship in which the provider generally applies professional skills to offer often intangible commodities such as legal services, insurance policies, and the like. (Another distinction is that a customer is more likely to visit a retail establishment, whereas a client may more easily receive services without being physically present at the place of business. The escalation of mail-order business spurred by online retailing, however, has blurred this distinction.)