English is the language you are reading now — the first language of about four hundred million people and the second language of a great many more. It is also the adjective for England and its people.
It always takes a capital letter, which is the first thing to get right. The language is uncountable and takes no article: I speak English, not the English. But the English, with the article, means the people of England collectively, and English on its own as a noun can mean the school subject. Note the difference between English, British and UK: English refers to England only, British covers England, Scotland, Wales and Northern Ireland, and using them as synonyms will reliably annoy somebody.
1nounbritainThe language spoken in Britain, North America, Australia and much of the world.
“The whole meeting was in English.”
2adjectiveenglishBelonging to England or its people.
“An English village with one pub and no shop.”
3nounschoolThe school subject of English language and literature.
“She teaches English to sixth-formers.”
Too few real examples of this word to estimate which sense is commonest.
english is a language.
unknown. It is speculated to relate either to people from England introducing the technique for billiards or bowling in the United States, or perhaps from a particular person with the surname English.
Etymology from Wiktionary, CC BY-SA