In linguistics, declension (or declination) is the occurrence of inflection in nouns, pronouns and adjectives, indicating such features as number (typically singular vs. plural), case (subject, object, and so on), or gender. Declension occurs in a great many of the world's languages, and features very prominently in many European languages, but is much less prominent in English; English nouns only decline to distinguish singular from plural (for example book vs. books), English adjectives don't… (More on Declension)