 For example, το φως ("fos", "light") becomes του φωτός, τα φώτα and των φώτων and το οξύ ("oxy", "acid") becomes του οξέος, τα οξέα and των οξέων.Adjectives agree with nouns in gender, case and number.Therefore, each adjective has a threefold declension paradigm for the three genders.