A noun can be defined as a word for a person, a place, a thing, or an abstract quality, an attribute, an action or a condition, e.g. in English, ‘girl’, ‘Mary’, ‘Greece’, ‘table’, ‘beauty’, ‘loneliness’; in Greek, κορίτσι, Μαρία, Ελλάδα, τραπέζι, ομορφιά, μοναξιά. Greek nouns belong to various declensions; by declensions we mean the systems of endings that serve to indicate case and number: nominative, accusative, genitive and vocative cases, and singular and plural number. The complete set of forms for a given noun is referred to as a paradigm. The noun paradigms presented below are arranged primarily by gender: masculine, feminine, common gender (that is, nouns which can be either masculine or feminine) and neuter.