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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
companies which
Grammar usage guide and real-world examplesUSAGE SUMMARY
"companies which" is correct and usable in written English.
You can use it when you want to introduce a list of companies that follow a certain criterion. For example: "I interviewed with several companies which had an opening for a software engineer position."
✓ Grammatically correct
News & Media
Science
Alternative expressions(4)
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
60 human-written examples
In relation to energy companies, Which?
News & Media
Companies which do not have shareholders are equally at risk.
News & Media
"Companies which are complicit must pay a heavy price".
News & Media
Unhappiness seems to be particularly common in car companies, which suffer from global overcapacity, and telecoms companies, which are being buffeted by a technological revolution.
News & Media
There are companies which make 90% profits on orphan drugs.The sad truth is that pharma companies which have monopolies on treatment can charge what they like.
News & Media
Energy companies, which use different formulas for calculating their numbers, tend to present even higher estimates.
News & Media
Shares in financial companies, which are particularly sensitive to interest-rate moves, have been hit hard.
News & Media
Cable companies, which take a cut when they sell a film, help with advertising.
News & Media
Our largest financial institutions are bank holding companies, which include both banks and enormous trading operations.
News & Media
Today it still has 52 local companies, which benchmark their services against each other.
News & Media
So they did for the hydro-power companies, which were within days of enforced electricity rationing.
News & Media
Expert writing Tips
Best practice
Use "companies which" to introduce a defining or non-defining relative clause that provides additional information about specific companies. This helps to clearly specify the companies being referred to.
Common error
Avoid using "that" instead of "which" when a non-restrictive clause is intended. "Which" is generally preferred for non-restrictive clauses that add extra information but are not essential to the sentence's meaning. Using "that" is accepted for restrictive clauses, but it may lead to ambiguity.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "companies which" functions primarily as a relative clause introducing additional information about the companies being discussed. As Ludwig indicates, it is correct and suitable for this purpose. It helps to specify which particular companies are being referenced within the broader context.
Frequent in
News & Media
61%
Science
37%
Formal & Business
2%
Less common in
Wiki
1%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "companies which" is a grammatically sound phrase used to introduce relative clauses that provide additional context about companies. As Ludwig AI confirms, it's perfectly acceptable in written English. It sees frequent use in news and media and scientific writing, making it a versatile choice for adding descriptive details. Remember to use "which" for non-restrictive clauses that offer extra but not essential information, and use "that" when you need to define a characteristic to distinguish the right companies from others. When in doubt, remember the phrase is very common in professional and general communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
companies that
Simple substitution of "which" with "that".
businesses that
Replaces "companies" with "businesses" for a more general term, changing the sentence structure to use "that" instead of "which".
firms that
Substitutes "companies" with "firms", a synonym, while adapting the clause with "that".
businesses which
Substitutes the word "companies" for "businesses", while maintaining "which".
firms which
Substitutes the word "companies" for "firms", while maintaining "which".
the companies that
Adds the definite article "the" before companies and uses "that" instead of "which".
organizations that
Uses "organizations" instead of "companies", broadening the scope, and changes the relative pronoun to "that".
corporations that
Replaces "companies" with "corporations", a more formal term, changing the relative pronoun to "that".
the firms that
Adds the definite article "the" before firms and uses "that" instead of "which".
enterprises that
Replaces "companies" with "enterprises", a more formal term, and changes the relative pronoun to "that".
FAQs
How can I use "companies which" in a sentence?
Use "companies which" to introduce a clause that provides more information about those companies. For example, "I prefer "companies which offer" flexible work hours."
What is the difference between "companies which" and "companies that"?
"Companies which" is typically used for non-restrictive clauses, adding extra but non-essential information. "Companies that" is used for restrictive clauses, essential for defining the companies. However, "companies that" is more frequently used. The choice depends on whether the clause is essential to the sentence's meaning.
What can I say instead of "companies which"?
You can use alternatives like "businesses that", "firms that", or "organizations that" depending on the context.
Is it better to use "that" or "which" after "companies"?
While both are grammatically acceptable, "that" is generally preferred for restrictive clauses (essential information), and "which" is for non-restrictive clauses (additional information). Consider whether the clause is crucial for identifying the companies being discussed.
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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