Websites in this category and its subcategories contain English as a Second Language (ESL) resources for students and teachers. ESL is the learning and teaching of the English language to people who are not native speakers of English, that is, that do not have English as their mother tongue. Regarding terminology, "ESL" is the term commonly used in the USA, in Canada it is also known as English for Speakers of Other Languages (ESOL), and in the rest of the world it is known as English as a Foreign Language (EFL).