Ancient Greek nouns

In Ancient Greek, all nouns are classified according to grammatical gender (masculine, feminine, neuter) and are used in a number (singular, dual, or plural). According to their function in a sentence, their form changes to one of the five cases (nominative, vocative, accusative, genitive, or dative). The set of forms that a noun will take for each case and number is determined by the declension that it follows.