Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
which serve
Grammar usage guide and real-world examplesUSAGE SUMMARY
'which serve' is correct and usable in written English.
You can use it when you want to refer to a specific item or group of items that serve a particular purpose or function. For example, "She was wearing gloves, which serve to protect her hands from the cold."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
(A few go to Gesamtschulen, which serve all sorts).
News & Media
"The arc of history shows us that governments which serve their own people survive and thrive; governments which serve only their own power do not.
News & Media
Jude Law wears glasses (which serve only to make him look sexier).
News & Media
But their legacy endures: synagogues, libraries and schools, many of which serve Jews and non-Jews.
News & Media
These are questions that are never adequately answered, but which serve as unwelcome distractions.
News & Media
The museum provides educational programs, which serve 20,000 school children a year.
News & Media
The cakes, which serve about 10, are packed in satin boxes decorated with silk flowers.
News & Media
The peasants there are very attached to their crops, which serve traditional medicinal and ceremonial purposes.
News & Media
Whatever the cause, I welcome initiatives such as Society Central which serve to bridge the gap.
News & Media
The cheapest accommodations in town are guest houses (similar to B&B's), which serve Continental breakfast.
News & Media
According to Locke, ideas exist independently of words, which serve merely as their vehicles.
Encyclopedias
Expert writing Tips
Best practice
When using "which serve", ensure the clause is nonrestrictive, adding extra information but not essential to the sentence's core meaning. Use commas to set it apart.
Common error
Avoid using "that serve" when a nonrestrictive clause is intended. "Which" is used for nonrestrictive clauses (adding extra information), while "that" is used for restrictive clauses (essential to the sentence's meaning). For example, use "The programs, which serve the community, are effective" instead of "The programs that serve the community are effective" if you simply want to describe the programs.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which serve" introduces a nonrestrictive relative clause. According to Ludwig AI, this is grammatically correct. It adds extra information to the noun it modifies without being essential to the sentence's core meaning, as shown in various Ludwig examples.
Frequent in
Science
42%
News & Media
36%
Wiki
11%
Less common in
Encyclopedias
3%
Formal & Business
5%
Reference
3%
Ludwig's WRAP-UP
In summary, "which serve" is a grammatically correct and very common phrase used to introduce nonrestrictive relative clauses. It provides additional, non-essential information about a noun, enhancing the description without altering the core meaning of the sentence. As Ludwig AI confirms, it appears across diverse contexts, notably in science, news, and encyclopedias, maintaining a neutral register suitable for a wide range of audiences. Remembering to use commas when employing "which serve" ensures clarity and adherence to grammatical best practices. For semantically similar alternatives, consider "that function as" or "that provide" for varied expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that provide
Replaces "serve" with "provide", emphasizing the act of supplying or furnishing something.
that are designed to
Uses "are designed to" instead of "serve", focusing on the intended purpose or design.
that function as
Replaces "serve" with "function", emphasizing the role or purpose.
that offer
Substitutes "serve" with "offer", focusing on the act of presenting something for use.
that facilitate
Substitutes "serve" with "facilitate", emphasizing the ease of use or process.
that contribute to
Uses "contribute to" instead of "serve", highlighting the contribution to a larger purpose.
that assist in
Replaces "serve" with "assist in", focusing on the act of helping or aiding.
which are intended for
Emphasizes intention or destination instead of the act of service.
that are utilized for
Substitutes "serve" with "are utilized", highlighting the utility of something.
that are employed for
Uses "are employed" instead of "serve", focusing on the active use of something.
FAQs
How do I use "which serve" in a sentence?
Use "which serve" to introduce a nonrestrictive clause, adding extra information about something already mentioned. For example, "The libraries, which serve both Jews and non-Jews, are historic landmarks."
What can I say instead of "which serve"?
You can use alternatives like "that function as", "that provide", or "that are utilized for" depending on the context.
Is it correct to use "that serve" instead of "which serve"?
While "that serve" is grammatically correct in some contexts, "which serve" is typically used for nonrestrictive clauses that add extra, non-essential information. Using "that" implies the clause is essential to understanding the noun it modifies.
What's the difference between "which serve" and "that serve"?
"Which serve" introduces a nonrestrictive clause set off by commas, adding extra information. "That serve" introduces a restrictive clause, essential to the sentence's meaning and not set off by commas. For example, "The clinics that serve military families are essential" versus "The clinics, which serve military families, are well-funded."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested