Dionysiou is the masculine and neuter genitive case of the Greek second declension. Nouns and verbs had complex systems of declension and conjugation respectively. Nouns of this declension are either masculine or neuter. There are only four 4th declension neuter nouns. Third declension nouns have various patterns of declension. Greek nouns in the second declension are derived from the Omicron declension. The endings of nouns vary according to their declension. The category of animacy is relevant in Russian nominal and adjectival declension. In the third declension, there are four irregular nouns. The stems of nouns of this declension usually end in and are typically feminine. Nouns in "-as" stem from the ancient third declension. It resembles a masculine noun of the fourth declension. For declension tables of second-declension nouns, see the . The gender determines the declension of the adjectives. Their declension is same to the second adjective feminine declension.