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
realm of knowledge
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "realm of knowledge" is correct and usable in written English.
It can be used to refer to a specific area or domain of understanding, expertise, or information. Example: "In the realm of knowledge, science and philosophy often intersect, leading to profound insights."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
domain of knowledge
field of knowledge
field of expertise
area of study
sphere of knowledge
domain of understanding
body of information
scope of understanding
sphere of cognition
range of awareness
question of knowledge
atmosphere of knowledge
relation of knowledge
dominance of knowledge
mastery of knowledge
connection of knowledge
subject of knowledge
order of knowledge
fields of knowledge
horizon of knowledge
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
15 human-written examples
It lay in yet a third realm of knowledge: knowing why.
News & Media
If successful, it will open up a new realm of knowledge online and a new market.
News & Media
Science is that narrow realm of knowledge that, in principle, is universally accepted.
News & Media
In such found clips we glimpse a realm of knowledge to which only a certain elect is privy.
News & Media
No one knows: political forecasting is less a realm of knowledge than a form of entertainment and, above all, a business.
News & Media
To his acolytes, Eloi (Malik Zidi) and Alexandre Alexandre Steigerr), André is the heroic embodiment of literary dash and sophistication, a classroom Lord Byron who has already arrived in the exalted realm of knowledge and creativity they aspire to inhabit.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
This realm of knowledge-intensive business services provides much more granular and targeted services than traditional forms of outsourcing.
News & Media
This relationship is analysed in the realm of knowledge-intensive firms' teams where it is particularly critical due to the double coordination and knowledge integration role played by management control systems.
Ayala is one of many who claim that "science and religion concern nonoverlapping realms of knowledge".
News & Media
"Science and religion concern nonoverlapping realms of knowledge," he writes in the new book.
News & Media
But there may be additional realms of knowledge for which social location is significant, and social location may not play out in the same way in all realms.
Science
Expert writing Tips
Best practice
When using "realm of knowledge", ensure the context clearly defines the specific area or subject being referenced. For example, "In the realm of knowledge concerning astrophysics, black holes remain a significant enigma."
Common error
Avoid using "realm of knowledge" in overly general contexts where a more specific term would be more appropriate. Instead of saying "The realm of knowledge is vast", consider specifying the area of knowledge, such as "The field of scientific research is vast."
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "realm of knowledge" functions as a noun phrase, typically serving as a subject complement or object of a preposition. Based on Ludwig's examples, it commonly designates a specific area, field, or domain of understanding, expertise, or information.
Frequent in
News & Media
33%
Science
33%
Encyclopedias
8%
Less common in
Wiki
8%
Formal & Business
8%
Reference
0%
Ludwig's WRAP-UP
In summary, "realm of knowledge" is a grammatically sound and versatile noun phrase used to denote a specific domain, area, or field of understanding. According to Ludwig, its usage spans various contexts, from News & Media and Science to Encyclopedias, exhibiting a neutral to formal tone. While alternatives like "domain of knowledge" and "field of expertise" exist, "realm of knowledge" provides a slightly more elevated and encompassing feel. Be mindful to use it with specificity, avoiding overly broad applications. As Ludwig AI confirms, the phrase is correct and commonly used in written English, making it a reliable choice for expressing expertise or understanding within a defined subject area.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
domain of understanding
Replaces "realm" with "domain" and "knowledge" with "understanding", focusing on comprehension.
field of expertise
Emphasizes specialized knowledge and skill in a particular area.
body of information
Highlights the collection and organization of data and facts.
scope of understanding
Focuses on the extent and range of comprehension.
area of study
Refers to a specific subject or discipline investigated for knowledge.
sphere of cognition
Uses more formal terms to describe the mental process of acquiring knowledge.
range of awareness
Highlights the extent to which one is conscious and informed.
expanse of learning
Emphasizes the breadth and depth of acquired knowledge.
territory of intellect
Presents knowledge as a domain of intellectual activity and exploration.
world of erudition
Suggests a rich and extensive accumulation of scholarly knowledge.
FAQs
How can I use "realm of knowledge" in a sentence?
You can use "realm of knowledge" to refer to a specific area or domain of understanding. For example: "Her expertise lies in the realm of knowledge concerning ancient civilizations."
What's a good alternative to "realm of knowledge"?
Alternatives include "domain of knowledge", "field of expertise", or "area of study", depending on the specific context.
Is "realm of knowledge" a formal or informal phrase?
"Realm of knowledge" is suitable for both formal and informal contexts, though it leans towards a slightly more formal tone. It is appropriate for academic papers, news articles, and general discussions.
How does "realm of knowledge" differ from "sphere of knowledge"?
While similar, "sphere of knowledge" often implies a broader, more encompassing scope, whereas "realm of knowledge" can refer to a more defined or specific area.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested