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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
they intersect
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they intersect" is correct and usable in written English.
You can use it when discussing the point at which two or more lines, paths, or concepts meet or cross each other. Example: "In geometry, we learn that parallel lines never intersect, while intersecting lines meet at a specific angle."
✓ Grammatically correct
Science
News & Media
Academia
Wiki
Alternative expressions(2)
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
Filaments of dark matter stretch across the simulated scene, galaxies forming where they intersect and the dark matter is densest.
News & Media
At important junctures, they intersect and overlap.
Himmelman traces these forces as they intersect throughout Bradlee's life.
News & Media
And to the degree to which they intersect as well.
Namely, the lines are not parallel, and hence, they intersect.
The material is concentrated in the nearly straight ligaments and in the nodes where they intersect.
Anderson's great gift is to catch the generations as they intersect.
News & Media
And sometimes they intersect neatly with temporary exhibitions, as is the case now.
News & Media
This process has only sped the natural cross-pollination of languages whenever they intersect.
News & Media
Where they intersect is in their success in the Tour de France, and in their comebacks.
News & Media
She covers media, social media and celebrity — and the way in which they intersect and collide.
News & Media
Expert writing Tips
Best practice
When describing abstract concepts, ensure that the context clearly establishes what "they" refers to, to avoid ambiguity. For instance, "When cultures and personal values "they intersect", conflicts can arise."
Common error
Avoid using "they intersect" when the subjects are not clearly defined or are too vague. Ensure the subjects have been previously introduced and the relationship between them is clear to the reader.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they intersect" functions as a verb phrase indicating the point at which two or more things meet or cross. This usage is supported by Ludwig and the numerous examples provided, demonstrating its role in describing relationships between various subjects, from lines in geometry to abstract concepts.
Frequent in
News & Media
38%
Academia
25%
Science
22%
Less common in
Wiki
10%
Formal & Business
3%
Social Media
2%
Ludwig's WRAP-UP
In summary, the phrase "they intersect" is a grammatically sound and frequently employed verb phrase used to depict the point at which two or more entities converge or share a common space. As Ludwig AI confirms, its versatility allows for its use across diverse contexts, including science, news, academia, and general writing. While semantically similar alternatives like "they cross" or "they meet" exist, clarity and precision in defining the subjects are crucial for effective communication. Remember to maintain a neutral register, and always ensure that the context supports the clear understanding of what "they" refers to. The analysis indicates its widespread acceptance and utility in contemporary English.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they cross
Focuses on the action of crossing a path or boundary.
they meet
Emphasizes the act of coming together at a specific point.
they converge
Implies coming together from different directions.
they coincide
Highlights the simultaneous occurrence or alignment.
they overlap
Suggests a shared area or element between two things.
they intersect each other
Adds redundancy for emphasis, making the intersection explicit.
they come together
A more general way of describing the action of meeting.
they touch
Focuses on physical contact or proximity.
they link up
Suggests a connection or relationship being formed.
they interface
Implies an interaction or connection between systems or components.
FAQs
How can I use "they intersect" in a sentence?
You can use "they intersect" to describe where two or more things meet or have elements in common. For example, "Their professional lives and personal interests often "they intersect"." Ensure that the subjects are clearly defined.
What can I say instead of "they intersect"?
You can use alternatives like "they cross", "they meet", or "they overlap" depending on the context.
When is it appropriate to use "they intersect"?
It is appropriate to use "they intersect" when you want to emphasize the point at which two or more lines, surfaces, or general things meet or cross. It can apply to physical objects, abstract concepts, or events.
Is "they intersect each other" redundant?
Yes, "they intersect each other" is somewhat redundant because "intersect" already implies a reciprocal action. While not grammatically incorrect, using just "they intersect" is generally more concise.
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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