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
two major categories
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "two major categories" is correct and usable in written English.
It can be used when discussing classifications or divisions within a particular subject or topic. Example: "The research findings can be divided into two major categories: qualitative and quantitative data."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(3)
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
Berkshire's derivatives fit into two major categories.
News & Media
Transplant surgeons recognize two major categories of death.
News & Media
There are two major categories of securities: public and private.
News & Media
The challenges would fall into two major categories.
News & Media
There are two major categories of clinical protocols.
Kate Winslet and Meryl Streep were each nominated in two major categories.
News & Media
Well, from my point of view, there are two major categories of issues.
News & Media
Here we focus on two major categories of bias: selection bias and information bias.
Science
Current methods can be grouped into two major categories: neighborhood-based approaches and directional filtering.
The travel demand is divided into two major categories which are passenger travel and freight travel.
Science
Consolidants can be divided into two major categories: mineral and synthetic consolidants.
Encyclopedias
Expert writing Tips
Best practice
When using "two major categories", ensure the categories are mutually exclusive and collectively exhaustive to avoid ambiguity. Clearly define the criteria for each category to ensure a clear distinction.
Common error
Avoid using "two major categories" when the subject matter has nuanced subcategories that warrant more attention. If the topic is complex, consider outlining the specific categories instead of grouping all elements into just two to better demonstrate the complexities.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "two major categories" functions as a noun phrase that introduces a classification or division of a subject into two primary groups. As Ludwig AI suggests, it's commonly used across diverse contexts to simplify information.
Frequent in
Science
39%
News & Media
31%
Encyclopedias
5%
Less common in
Wiki
3%
Formal & Business
2%
Reference
0%
Ludwig's WRAP-UP
The phrase "two major categories" is a grammatically sound and frequently used expression to classify information into two primary groups. As Ludwig AI confirms, this phrase is applicable across a wide range of contexts, most commonly in science and news, and maintains a neutral register, making it suitable for both formal and informal communication. When using this phrase, it’s crucial to ensure that the categories are mutually exclusive and collectively exhaustive. Alternatives include "two main types" and "two primary classifications". However, avoid oversimplification; ensure that the use of two categories adequately represents the complexity of the subject matter.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
two primary classifications
Replaces "categories" with "classifications" and "major" with "primary", emphasizing the act of classifying.
two main types
Substitutes "categories" for "types" and "major" for "main", focusing on the different kinds within a subject.
two broad divisions
Replaces "categories" with "divisions" and "major" with "broad", highlighting the act of separating into groups.
two principal kinds
Changes "categories" to "kinds" and "major" to "principal", suggesting the most important distinctions.
two distinct groups
Substitutes "categories" with "groups" and "major" with "distinct", focusing on the separateness of the sets.
two separate classes
Replaces "categories" with "classes" and "major" with "separate", underscoring the act of sorting.
two general classifications
Replaces "categories" with "classifications" and "major" with "general", focusing on high-level sorting.
two significant groupings
Changes "categories" to "groupings" and "major" to "significant", highlighting the importance of the groups.
two dominant forms
Substitutes "categories" with "forms" and "major" with "dominant", emphasizing the prevalent types.
two overarching divisions
Replaces "categories" with "divisions" and "major" with "overarching", highlighting the high-level separation.
FAQs
How can I use "two major categories" in a sentence?
You can use "two major categories" to introduce a simplified classification of a topic. For example, "The causes of the problem fall into "two major categories": internal and external factors".
What are some alternatives to using "two major categories"?
Depending on the context, you could use alternatives such as "two main types", "two primary classifications", or "two broad divisions".
When is it appropriate to use the phrase "two major categories"?
It is appropriate to use "two major categories" when you want to simplify a complex topic by dividing it into two distinct groups for easier understanding. However, ensure that these categories are well-defined and comprehensive.
Is it correct to say "two major categories" or should I use another form?
The phrase "two major categories" is grammatically correct and widely accepted in formal and informal writing. There is no need to use another form unless you want to vary your language, for example by saying "two primary categories".
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested