Articles
An article is a small word(such as a, an, or the) that qualifies a noun. Italian articles must agree in number and gender with the nouns that they accompany.
The definite article corresponds to the; it is used when the speaker can identify the noun that follows.
The indefinite article corresponds to a(n) and some. It is used when referring to one or several nouns within a group without specifying which specific one(s).