Simplify Learning: Core Vocabulary via Oxford and Mondly

1.3 billion people around the world speak English either natively or as a second language . This clearly makes English the_lingua franca_ of Earth. But every day more people emerge wanting to learn English faster and easier .

Now, you probably heard about Oxford Practice Grammar before, but what about the Oxford 3000? If you want to work smarter, not harder, and build your English vocabulary fast with high-frequency, high-value words, read on to find out more.

What is the Oxford 3000?

Improving your vocabulary is, without a doubt, one of the key aspects of language learning. The more words you’ll know, the closer you’ll be to fluency. But keep in mind that not all words are equally important to know. While the most common 1000 words account for 75% of all spoken communication, the most common 3000 words account for 85% of it. And if you get to 5000 words, you’ll be able to understand 98% of all spoken or written communication. And this is applicable to almost any language .

The good news is that when it comes to the English language, Oxford University Press made it easy for you and actually put together a list of the most important words you have to learn to achieve a certain language level. This list is known as the Oxford 3000 and it includes the 3000 most important words in English.

Additionally, there is an extended list of 5000 words called the Oxford 5000 which will give learners a very high coverage of the words they are likely to encounter or use in spoken or written communication in English.

Launched in 2005, the aim of the Oxford 3000-word list is to help learners identify the high-frequency, high-value words that are especially useful when it comes to learning English as a second language.

As Oxford University Press explains, the original list was compiled by looking at word frequency information from the British National Corpus, a large database of English texts (100 million words) composed of a wide range of written and spoken genres which can be seen as representing language usage in general. While frequency was the main guiding principle in compiling the list, raw frequency data can throw up a number of anomalies that make little sense from a teaching perspective. For example, some words that are clearly useful for learners, such as “passport” and “apple”, are not very high frequency in a general corpus. For this reason, compilers took into account not just frequency, but also familiarity (…) as judged by a panel of 70 teachers.

Since its inception, the Oxford 3000 has been revised to reflect the language in daily use that has changed a lot due to the growth of the internet and social media.

The most important words in English and their relation to CEFR levels

As the paper Oxford 3000 and Oxford 5000: The Most Important Words to Learn in English shows, “vocabulary size is one of the most useful indicators of overall language level”. So here’s exactly how the Common European Framework of Reference (CEFR) levels look in relation to the 5000 most frequent words:

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CEFR Level	Number of words known out of the most frequent 5,000
A1	<1,500
A2	1,500–2,500
B1	2,500–3,250
B2	3,250–3,750
C1	3,750–4,500
C2	4,500–5,000

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As you can see, vocabulary acquisition is not arbitrary. There are certain words that will be more useful to you depending on where you are in your language journey.