Client vs Customer vs Patron

When to use each in English, with meaning, register, and examples.

Client

Top 2,000 (common)B1noun

Customer

Top 1,000 (very common)A1noun

Patron

Top 2,000 (common)C1noun
Most common: Customer
 ClientCustomerPatron
Pronunciation🇬🇧 //ˈklaɪənt//🇺🇸 //ˈklaɪənt//🇬🇧 /["/ˈkʌstəmə(r)/"]/🇺🇸 /["/ˈkʌstəmər/"]/🇬🇧 /["/ˈpeɪtrən/"]/🇺🇸 /["/ˈpeɪtrən/"]/
MeaningA person or company that buys services.A person who buys goods or services.A person who supports or gives money to a person, organization, or activity.
ExampleThe consultant presented her ideas to the client.The customer returned the item because it was defective.Frederick the Great was the patron of many artists.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)Top 2,000 (common)
CEFR levelB1A1C1
Part of speechnounnounnoun
Collocationsnew client, potential client, client relationship, client servicesbig, favoured/​favored, favourite/​favorite, have, deal with, help, care, relations, relationshipinfluential, powerful, generous, a patron of the arts, influential, powerful, generous, a patron of the arts
Antonymsprovider, vendor, supplierseller, vendorcritic, enemy
Common mistakesConfused with 'customer' - 'client' is more formal and often involves ongoing services., Use as 'an client' instead of 'a client' - 'client' starts with a consonant sound.Confused with 'client' - generally, 'client' is used in services, 'customer' for retail., Using 'customers' when referring to a singular person., Mispronouncing the word, leading to misunderstanding.Confusing with 'pattern' in pronunciation., Using 'patron' in too casual a context., Misunderstanding as a term only for restaurant customers.
Usage notesUsed in business contexts; suitable for both informal and formal situations. Avoid using in casual conversations unrelated to business.Use 'customer' in business contexts. It's suitable for both formal and casual situations. Avoid using it in very informal conversations where 'client' might be more appropriate.Use 'patron' when referring to someone who regularly visits a place or supports an artist. Avoid in casual settings where simpler words like 'fan' might be more appropriate.

Frequently asked questions: Client vs Customer vs Patron

What's the difference between Client, Customer, and Patron?

Client: A person or company that buys services. Customer: A person who buys goods or services. Patron: A person who supports or gives money to a person, organization, or activity.

Which is more common: Client, Customer, and Patron?

Customer is the most common in everyday English.

Which is more advanced: Client, Customer, and Patron?

Patron is the highest level, at C1, on the CEFR scale.

Are Client, Customer, and Patron the same CEFR level?

Client: B1, Customer: A1, Patron: C1 on the CEFR scale.

What part of speech are Client, Customer, and Patron?

Client: noun, Customer: noun, Patron: noun.

Can you show an example of each?

Client: The consultant presented her ideas to the client. Customer: The customer returned the item because it was defective. Patron: Frederick the Great was the patron of many artists.

Can I use Client, Customer, and Patron interchangeably?

Not always. Client, Customer, and Patron are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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