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In the 18th century , during the Age of Enlightenment , the adoption of etiquette was a self-conscious process for acquiring the conventions of politeness and the normative behaviours ( charm , manners , demeanour ) which symbolically identified the person as a genteel member of the upper class .
 Age of Enlightenment
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Age of Enlightenment