Oak has been used as a Quinine substitute in the treatment of fevers. Tannins provide many of the healing properties of oak. Tannins bind with proteins in tissues, making a barrier resistant to bacterial invasion. Tannins strengthen tissues and blood vessels.
The opposite term Occident derives from the Latin word occidens, meaning west (lit. setting < occido fall/set). This term meant the west (where the sun sets) but has fallen into disuse in English, in favor of Western world.
In English grammar, an antecedent is the noun or noun phrase that a pronoun refers to. Also known as a referent. More broadly, an antecedent may be any word in a sentence (or in a sequence of sentences) that another word or phrase refers to.