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
but they function as
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "but they function as" is correct and usable in written English.
You can use it to explain the role or purpose of something in a specific context. Example: "These tools are not just for decoration, but they function as essential components in the overall design."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
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
6 human-written examples
Unusual physical skills at the piano make good things happen, but they function as stigmas as well.
News & Media
Not only are the sinks visually arresting, but they function as storage cubbies, too.
News & Media
The cigarettes in the animation above are no longer burning, but they function as memento mori just the same as a reminder that what's useful one minute is useless the next.
News & Media
These tracks might sound like dance music, but they function as pop songs.
News & Media
Such leaders might remain in view -- like Bono discoursing on global poverty -- but they function as figureheads no different from Prince Charles.
News & Media
Psychologically speaking, in some cases, suicide-related behaviors do not always mean that attempters would like to die, but they function as an unconscious signal for help.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
Neurochemicals like serotonin still remain central to this new theory of depression, but they function differently: as dynamic factors that make nerves grow, perhaps forming new circuits.
News & Media
Myc and NF-κB are well-established master regulators of initiation of transcriptional programs, but when deregulated, they function as oncogenic drivers in B cell lymphomas.
Science
They function as undercover agents.
News & Media
They function as the first clocks.
News & Media
Sports can work in the same way that art or music or film can evoke the same big feelings, hint at the same big things but they function as a business, with all the cynicism and condescension that come with that.
News & Media
Expert writing Tips
Best practice
When using "but they function as", ensure that the contrast introduced by "but" is clear and significant. The phrase should clearly explain the actual function or role in contrast to an expectation or initial impression.
Common error
Avoid using "but they function as" simply to introduce a function without a preceding contrasting element. Make sure there's a genuine contrast or unexpected twist that the phrase clarifies.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "but they function as" serves as a transitional conjunction and explanatory phrase. It introduces a contrast using "but," then explains the actual role or operation of something. Ludwig AI confirms the correctness and usability of this phrase in written English.
Frequent in
News & Media
50%
Science
30%
Encyclopedias
10%
Less common in
Wiki
10%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "but they function as" is a grammatically correct and commonly used phrase to introduce a contrasting function or role. According to Ludwig AI, it's suitable for a range of contexts, particularly in news, scientific, and encyclopedic writing. When using this phrase, ensure that the contrast is clear and that you are accurately explaining the unexpected or additional function. While there are several alternatives, such as "however they operate as" or "yet they serve as", the choice depends on the specific nuance you want to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
however they operate as
Replaces "but" with "however" and "function" with "operate" maintaining the contrast and functional description.
yet they serve as
Uses "yet" instead of "but" to indicate contrast, and replaces "function" with "serve", emphasizing the role.
nonetheless they work as
Substitutes "but" with "nonetheless" for a stronger contrast and "function" with "work" for simplicity.
although they act as
Starts with "although" repositioning the contrast, and uses "act" instead of "function".
even so they perform as
Emphasizes the contrast with "even so", and replaces "function" with "perform", highlighting the execution of a role.
still they fulfill the role of
Replaces "but" with "still" and uses "fulfill the role of" to elaborate on the functional aspect.
in spite of this they are used as
Focuses on the utilization aspect, replacing "function" with "are used", indicating a purpose-driven action.
despite that they operate in the capacity of
Highlights the operational aspect with "operate in the capacity of", offering a more formal alternative.
conversely they are employed as
Uses "conversely" to introduce the contrasting element, and "are employed" to focus on the application.
however they are designed to act like
Shifts focus to the intended design, using "are designed to act like" to describe the intended function.
FAQs
How can I use "but they function as" in a sentence?
Use "but they function as" to introduce a contrasting role or purpose. For example, "These decorations appear purely aesthetic, but they function as load-bearing supports".
What are some alternatives to "but they function as"?
Alternatives include "however they operate as", "yet they serve as", or "nonetheless they work as", depending on the specific nuance you wish to convey.
Is there a more formal way to say "but they function as"?
Yes, consider using phrases like "however, they operate in the capacity of" or "notwithstanding, they serve as" for a more formal tone.
What's the difference between "but they function as" and "but they serve as"?
"But they function as" emphasizes the method of operation, while "but they serve as" highlights the purpose or role. The choice depends on whether you want to focus on how something works or what it achieves.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested