An article is a word that modifies a noun in a particular way, by stating whether the noun is specific, unspecific, or partial. There are three types of Italian articles, and they all agree in gender and number with the nouns they modify.
One of the eight parts of speech, a noun is commonly defined as "a person, place, or thing." If that seems vague, that’s because it is.
Like English nouns, most Italian nouns have singular and plural forms. In addition, Italian nouns referring to people and animals often have different masculine and feminine forms, which means that these nouns can have up to four forms.