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.
An antecedent is the word (or words) that a pronoun refers to. The word antecedent means to go before in Latin. It gets its name from the idea that a pronoun refers to something previously mentioned in the sentence. Look at this example: