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What is a Lexical Richness?
Grade Level:
Class 3
NLP, Law, History, Social Sciences, Literature, Journalism, Communication
Definition
What is it?
Lexical richness measures how many different words are used in a piece of writing or speech. It tells us how varied and extensive someone's vocabulary is. A higher lexical richness means more unique words are used.
Simple Example
Quick Example
Imagine you are writing about your favourite cricket match. If you keep saying 'match was good, players were good, score was good,' your writing isn't very rich. But if you say 'the thrilling contest, the skilled cricketers, the impressive total,' you are using more different words, showing higher lexical richness.
Worked Example
Step-by-Step
Let's find the lexical richness of a short sentence: 'The cat sat on the mat. The cat was fat.'
1. Count the total number of words: "The cat sat on the mat. The cat was fat." has 10 words.
---2. List all the unique words (words that appear only once, ignoring repeats): 'The', 'cat', 'sat', 'on', 'mat', 'was', 'fat'.
---3. Count the number of unique words: There are 7 unique words.
---4. Calculate lexical richness: (Number of unique words / Total number of words) * 100.
---5. Calculation: (7 / 10) * 100 = 70.
---ANSWER: The lexical richness of the sentence is 70%.
Why It Matters
Lexical richness is important for clear communication and persuasive writing. Journalists use it to make their articles engaging, and lawyers use it to craft precise arguments. It helps you express yourself better in school essays and even when telling stories to your friends.
Common Mistakes
MISTAKE: Counting 'the' and 'The' as different unique words. | CORRECTION: Always treat words the same regardless of capitalization when counting unique words (unless it's a proper noun like 'India' vs 'india').
MISTAKE: Confusing total words with unique words. | CORRECTION: Total words include every single word, even repeats. Unique words are only the different words used.
MISTAKE: Not ignoring punctuation when counting words. | CORRECTION: Focus only on the words themselves. Punctuation like commas or full stops are not words.
Practice Questions
Try It Yourself
QUESTION: What is the lexical richness (in percentage) of the phrase: 'My dog likes to play. My dog likes to eat.' | ANSWER: Total words = 10. Unique words = 'My', 'dog', 'likes', 'to', 'play', 'eat' (6 unique words). Lexical richness = (6/10)*100 = 60%.
QUESTION: A paragraph has 50 words. If 20 of them are unique, what is the lexical richness? | ANSWER: (20 / 50) * 100 = 40%.
QUESTION: Which sentence has higher lexical richness? Sentence A: 'I love samosas. Samosas are yummy.' Sentence B: 'My favourite snack is a delicious samosa.' | ANSWER: Sentence A: Total = 7, Unique = 'I', 'love', 'samosas', 'are', 'yummy' (5 unique). Richness = (5/7)*100 = 71.4%. Sentence B: Total = 7, Unique = 'My', 'favourite', 'snack', 'is', 'a', 'delicious', 'samosa' (7 unique). Richness = (7/7)*100 = 100%. Sentence B has higher lexical richness.
MCQ
Quick Quiz
Which of these phrases shows the highest lexical richness?
The boy ran fast. The boy ran fast.
The big red car stopped quickly.
She likes to read books. She likes to read.
Chai, chai, chai, chai.
The Correct Answer Is:
B
Option B uses 6 unique words out of 6 total words (100% richness). Options A, C, and D repeat words, lowering their lexical richness.
Real World Connection
In the Real World
In India, news channels and newspaper journalists use tools to check the lexical richness of their reports. This helps them ensure their stories are engaging and use varied language to keep readers interested, whether it's about the latest IPL match or government policies. Even social media marketers try to use diverse words to make their ads stand out.
Key Vocabulary
Key Terms
LEXICAL: relating to words or vocabulary | UNIQUE WORDS: words that are different from each other, counted only once | VOCABULARY: the collection of words known by a person | SENTENCE: a group of words expressing a complete thought
What's Next
What to Learn Next
Now that you understand lexical richness, you can explore 'Vocabulary Building Techniques'. Knowing how to use more unique words will directly help you improve your own lexical richness in writing and speaking.
