There is one definite article in English: the. The is the most common word in the English language.
We use the definite article the before nouns that refer to specific things, things that have already been mentioned, and things that are already known to the people in the discussion. The can be used before both singular or plural nouns and both countable and uncountable nouns.
Articles are a kind of determiner, a part of speech which we use before a noun. There are two types of article: definite articles and indefinite articles.