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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
the sole difference is
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "the sole difference is" is correct and usable in written English.
It can be used to highlight the only distinction between two or more items, ideas, or situations. Example: "The sole difference is that one product is made from organic materials while the other is not."
✓ Grammatically correct
Science
News & Media
Wiki
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
9 human-written examples
The sole difference is that the doppelgänger has no consciousness; this – as opposed to a groaning, blood-spattered walking corpse from a movie – is what philosophers mean by a "zombie".
News & Media
(They were probably not aware that the sole difference is how far Mrs. Washington dips her ladle into the jug and whether she stirs, to loosen the pepper sediment).
News & Media
The sole difference is that the prospect of reward or punishment can induce people to act as the morally virtuous would (as justice requires, for example), but cannot induce them to act as if they had the natural abilities.
Science
The sole difference is his realisation that he loves Annis and wishes to marry her.
Wiki
The sole difference is that its structure will be based on only the structure of the relationships between the data elements.
The sole difference is the position of Neomaskellia andropogonis which becomes part of the cluster containing Bemisia tabaci, Tetraleurodes acaciae, Aleurochiton aceris, and Trialeurodes vaporariorum.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
It was the same novel that had got me into the course, and there was no development evident in it, I wrote in exactly the same style now as I had done then, the whole year had been wasted, the sole difference was that when they accepted me I thought I was a writer, while now, on the verge of finishing, I knew I wasn't.
News & Media
Compared to children who did not developed secondary acquired infection, the sole difference was a longer length of hospital stay for children who presented secondary acquired infection (p = 0.009; Additional file 1: Table S1).
Science
The sole difference was the loss of a 1,2-disubstituted double bond between C-2 and C-3, which was confirmed by the HMBC correlations of H2-2 and H2-3 with C-4, and of H2-3 with C-5, as well as the 1H-1H correlationation between H2-2 and H2-3.
The sole difference was that the questionnaire addressed to radiology practitioners asked about 'performed and/or reported' paediatric MI examinations while that addressed to radiographers asked about 'performed' MI examinations, since the latter do not report paediatric MI examinations at the hospital studied.
Science
While 1 and 3 are, in a topological perspective, identical (the sole difference being on the number of crystallization water molecules), being a 4-connected uninodal 2D networks with point symbol of {44.62}, 2 and 4 are in turn a 4,5-connected binodal (point symbol of {44.62}{44.64}) and 5-connected uninodal (point symbol of {46.64}) 3D networks, respectively.
Science
Expert writing Tips
Best practice
When using "the sole difference is", ensure that you've clearly established what two or more entities are being compared to provide context for the distinction.
Common error
Avoid using "the sole difference is" when multiple differences exist. If there are other contributing factors, opt for phrases like "a key difference is" or "one difference is" instead to maintain accuracy.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "the sole difference is" functions as a connector, specifically used to highlight the single, unique distinguishing characteristic between two or more subjects. This is supported by Ludwig AI which deems the phrase grammatically correct and usable.
Frequent in
Science
42%
News & Media
30%
Wiki
12%
Less common in
Formal & Business
5%
Encyclopedias
5%
Reference
1%
Ludwig's WRAP-UP
In summary, "the sole difference is" serves as a precise connector to pinpoint a single distinguishing factor between compared subjects. Ludwig AI validates its grammatical correctness and usability. While appropriate across various contexts, it is most frequently encountered in scientific, news, and formal business writing due to its analytical nature. Alternatives include "the only difference is" or "the main distinction is". When using this phrase, ensure the uniqueness of the difference and the clarity of the comparison to prevent ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the only distinction is
Replaces "sole" with "only", emphasizing exclusivity.
the single difference is
Replaces "sole" with "single" to highlight that there is only one.
the one and only difference is
Adds emphasis to the uniqueness of the difference.
the main difference is
Substitutes "sole" with "main", focusing on the most important difference.
the key difference is
Replaces "sole" with "key", highlighting the most significant differentiating factor.
the primary difference is
Emphasizes the main or most important difference.
the crucial difference is
Replaces "sole" with "crucial", highlighting the importance of the difference.
the only variation is
Uses "variation" instead of "difference", indicating a slight change.
the distinctive feature is
Focuses on a characteristic that sets something apart.
what sets them apart is
Highlights what makes something unique compared to others.
FAQs
How can I use "the sole difference is" in a sentence?
Use "the sole difference is" to point out the one and only differentiating factor between two things. For instance, "The two models are identical in every way; "the sole difference is" the color of the trim."
What are some alternatives to "the sole difference is"?
You can use phrases like "the only difference is", "the main distinction is", or "the key difference is" depending on the context and the level of emphasis you want to convey.
Is it correct to say "the only difference is" instead of "the sole difference is"?
Yes, both phrases are grammatically correct and convey a similar meaning. "The only difference is" is generally more common in everyday conversation, while "the sole difference is" may sound slightly more formal.
What's the difference between "the main difference is" and "the sole difference is"?
"The main difference is" highlights the most significant difference, whereas ""the sole difference is"" emphasizes that there is only one difference between the items being compared.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested